Even though I am a big Onkyo fan, I recently found out that the Video processing on the SR606 is not so great.(according to some reviews and some members here on AH--which I consider to be very reliable sources)
Last years SR805 can be had for a very competitive price right now and that unit is very solid.(yes an ONKYO fanboy I am). And, Audioholics.com's online store is having some very good deals right now too! One of Yamaha's great AVR's is featured on the online store as we speak.(I mean read

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As far as speakers go, that is always a matter of what YOUR ears like. You must audition as many speakers as it takes until you find yourself saying: "These are the speakers for me". Just bring with you, familar material(music, and movies)where ever and whenever you go to audition speakers. Audioholic's online store has some good deals going on speakers too.(BTW,2.1 or 3.1 shouldn't be a problem no matter which of the more well regarded companies you go with for your speaker set up.IMHO)
You'll keep your speakers and your AVR the longest, out of all of your other gear.(the speakers will actually stay the longest though.IMHO

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There are also some very good online speaker companies that might interest you. I believe most of them offer in home auditioning now, and Aperion Audio does a 30 day money back in home audition where they eat the shipping both ways should you not like them after the auditioning period.(I have one of their subs myself

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All the best!!

Joe B.