It depends upon what your priorities are. What is your room size (including all openings) and prefered listening levels? Just don't be surprised to spend 25-35% of your budget on a sub. To me, the sub can make or break a HT system. Everythings top notch but the sub is lacking. You will notice it missing. Conversely, you don't want everything to be one big rumbling note, which can be indicitive of a boomy sub. At the top of my list would be either the Seaton Submersive going for $2,500, give or take, or the JTR Captivator 2400, similarly priced. Next would be the SVS SB13 Ultra for $1,599 shipped, dual Power Sound Audio XV15s for $1,518 delivered, or the Rythmik Audio FV15HP for slightly under $1,420 delivered, and the list can go on. Ultimately you want something which will keep you happy for years to come. Obviously, this is nowhere near an all-inclusive list.
Now to the heart of the system. Depends upon what you want. The Pioneer Elite models are good, as are receivers from Marantz, Denon, Harmon Kardon and Yamaha. Get a good one which has the features and capabilities which will suit your input needs for now and in the future and that you enjoy for years to come. I also would not rule out going the way of seperates, such as the Outlaw Audio 975/7125 for $1,400 though I do not believe that includes shipping. THX, as nice as it sounds, can be overrated.
Where do you go for speakers? Get whatever you like. I wouldn't rule out ones from Axiom Audio, Magnepan, Def Tech, Martin Logan, Swan, etc. Depends upon how many you truly want or need. Do you want a 5.1 system or a 9.3 system, etc?
For wire, interconnects, etc, I would highly recommend going through Monoprice. Save yourself some money. Lastly, don't forget about the remote. Logitech makes some good ones though I'm certain there are other better brands out there.
My HT journey truly started with nOrh ceramic 4.0s and a SVS 20-39CS with a Yamaha receiver to AV123 Rocket RS550 mains, RS150 surrounds, UFW-10 sub and RSC200 center powered by a Yamaha RX-V1065 to now that same Yamaha receiver powering Axiom Audio M22 on-walls with the VP160 center, Polk Audio RC80i in-ceiling surrounds with a soon-to-be added PSA XS30 sub.
HT can be a fun but expensive hobby. My system changes were brought about first by my marrying my current spouse then, most recently, by our living room. A small wall is not very condusive to tower speakers. That being said, she enjoys the HT system, perhaps moreso than I.
So get what you will enjoy for years to come and hope to avoid that bug of upgraditis. From the posts I have read, it seems the sub can be the root of that problem. Get a great one while you can. Best of luck!