Replacing HTIB receiver with something else?

[skatalite]

Alright guys, I'm wanting to dive into the world of "better" home theater audio, and am looking forward to straight-forward insight

Right now I have a Sony HTS-S2300 HTIB. It's nice, but it's 5.1 and I want to go 7.1 since I might as well have too many speakers than not enough, haha.

So, what I'm thinking is to build the new audio system in pieces. Starting with a new receiver.

According to the specs (http://tinyurl.com/ny46w9), each speaker is 3 Ohms and handles 143 watts, and 285 watts for the sub, for a total of 1,000 watts. For some reason, I've got a feeling many of you will say the power is exaggerated, which wouldn't surprise me.

Like I said: I want to get a new receiver, and am looking at the following, but I want to make sure my speakers will be compatible and that I'll achieve a good start to a new system.

I'd be using this with a PS3 Slim.

In no specific order:

1. Pioneer VSX-1019AH-K. 840 watts, 7.1 (so, 120 watts per channel). Decodes HD codecs as well as traditional codecs, 24p. Priced at $509 at Best Buy. Link: http://tinyurl.com/nyuwrc

2. Denon AVR790. 630 watts, 7.1 (90 watts per channel). Decodes what I want it to, 24p output, priced at $500 at Best Buy. Link: http://tinyurl.com/nrt3vq

3. Yamaha RX-V565. 630 watts, 7.1 (90 watts per). Decodes all the goods, 24p output, priced at $430 at Best Buy. Link: http://tinyurl.com/kj84db

I'm just looking for a 7.1 receiver that will be compatible with my current speakers from the S2300.

Any help would be greatly, greatly appreciated