Looking to get some Polk LSi speakers due to getting a discount on them where I work. I will be using an HK AVR 230 as a pre/pro and running a Marantz MM9000 (150x5 @ 8 ohms) on the Polks. What I want to know is should I go with LSi9s up front or go with the full-range towers, the LSi15s? In the specs it seems the 15s would handle midrange a little better, due to having all the bass given to the 8" driver while the dual 5.25" pick up 150hz and above. The LSi9s don't have a HPF (high pass filter) and one handles all low range up to 200hz and the other takes all low-mids up to 2.4khz. Also if I get the 15s I'm thinking of bi-amping them and running the last channel to the center. The way my townhouse is setup it's going to be VERY hard to get rears to work so I was just thinking of doing a 3.1 setup. I listen to music 80% of the time anyhow and it reall wouldn't hurt me to not have rears. ***This taken off Polks site to maybe help you guys understand the crossovers better*** POLK LSi15s: Driver 1: HPF at 150Hz 6dB/oct, LPF at 800Hz 12dB/oct. Driver 2: HPF at 150Hz 6dB/oct, LPF at 2.4kHz 12dB/oct. Tweeter: HPF 2.4kHz 18dB/oct. Crossover(subwoofer) LPF at 150Hz 12dB/oct. POLK LSi9s: Driver 1: LPF at 200Hz 12dB/oct. Driver 2: LPF at 2.4kHz, 12 dB/oct. Tweeter: HPF at 2.4kHz 18dB/oct. ANY input is greatly appreciated!