I finally got my Polk LSi audition in yesterday. Polk and Rocket were the two major players left to audition on my list. I also posted a few of my previous speaker thoughts here (tried B&W, Thiel, Magnepan, Klipsch, BA, Mirage, Martin Logan...): http://www.avsforum.com/avs-vb/showt...hreadid=232788 Going into yesterday my favorites were clearly the B&W. Anyway, I listed for a few hours with various music from U2, Barenaked Ladies, Incubus, Foo Fighters, Green Day, Avril Lavigne. I got quite a range of voices and instruments, and knew the material well. Some of the material is well recorded, some could be considered "junk." The speakers were all driven by a Harman Kardon AVR 525. My real setup will use Parasound amps, so this is actually quite weaker. The "room" had considerable background noise as there was no door to the main floor with hundreds of customers. The LSi9, LSi15, and Klipsch were setup for A/B. MBQuart This is my reference from the long drive up and back, so was easy to do comparison. My Q series run off 187.5x2 and are backed up with a pair of JL Audio 12W3s on 400x2. The source is Pioneer Premier, with separate time alignment and 2 channel equalizers. For those unfamiliar with MB Quart Q series, they are among the most accurate car stereo speakers available. The detail rivals anything I've auditioned in home stereo, but is harsh and fatiguing without attenuation in the tweeter. Time alignment is necessary since I do not run kick panels. The tweeters are setup off-axis. This setup is great for detail and dynamics, however I am less pleased with the imaging compared to previous car setups with kickpanels. Klipsch I used this as a comparison as well since I listened to it AB with speakers in previous auditions. The dynamics were good, but again separation and high-frequencies turned me off. For more opinions you can read my previous thread, but the main point of this for me was to help reference this experience with the Polks to previous auditions with the B&W since no direct A/B is possible. Polk LSi15 First impressions were very good. Switching over from the Klipsch, there was slightly less "hit" to rock music. This is of course the major strength of Klipsch. However, the LSi offered a much higher level of refinement to me. Rather than a birage of sound, the instruments became much more separated. The highs were quite detailed, yet not as bright as the Klipsch (to me a good thing). The mids also were very clean and clear. The bass response was slightly muddy, but better than most speakers and dedicated subs. As a trade-off, the LSi15 played rather low through the bass frequencies. Even though I'm quite addicted to bass slam, I could easily listen to these speakers without a subwoofer. I do hate boomy bass, but this was really very flat response. A good track was Incubus's Are You In. There is a lot of running bass, which was well produced by the LSi15. Also, there is background noise (a party), and the voices were very easy to pick up. So I did like the separation and detail. There also is a string of drum notes that run across the sound stage and back which I now use instead of the IASCA test CD for checking soundstage. The LSi15 allowed a wide soundstage, yet was extremely good at creating precise imaging (Mirage would hate this). Placement was a big deal with the 15. Without close spacing and toe-in I didn't find good imaging. There clearly was a sweet-spot, and outside of it the experience wasn't nearly as good. However, I quickly found a good position that offered a VERY solid center image. I really enjoy shutting my eyes and being tricked into thinking there could actually be a person singing in a spot in front of me. The 15 easily offered the most solid center image of ANY speaker I've ever heard. High frequency detail was very good compared to the MBQuarts, but wasn't fatiguing at all. This is something I'm looking for. LSi9 I actually expected the LSi9 bookshelf to be preferred with a sub over the 15. However, I quickly decided I didn't want 9's up front. Placement was a little easier, but imaging wasn't the same. I quickly found that even though the speakers look very similar except for the 15's lower section, they are NOT. The cabinet and crossover makes the 9 different. As always, I must suggest someone listens to both these speakers themselves if they want to decide. But to me, the 9 turned me off. The 15 was much more dynamic, and even midrange sounded fuller. The 9 clearly had a boom in the upper bass region before it ran out of steam. Some deep male voices even reached down to this point, which was very disappointing. Compared to B&W (CDM and 800), I liked the LSi imaging more. I had extreme difficulty placing the B&W to my liking, and even still, sounds that I would expect to be localized were spread out a little on the B&W. I also found the LSi to have less static up high when playing "junk" music, yet still offering good detail in the higher registers. I think the LSi will just be an easier speaker for me to use, but I still hold the B&W with extremely high regard. It is a very refined speaker (particularly the 805 bookshelf). I've got to run, but for now this is my report. I obviously am leaning heavily towards LSi15 up front now in my system. I also tried the LSiC, and am considering the 9s for rear channel, but more on this later.