It seems like you're interested in higher-end equipment... None of these brands is where I'd look for that. Some of these models seem to be about 10 years old and anything from these brands won't likely last much longer than that.
I probably wouldn't bother buying an integrated amp or separates from these brands. What's the difference between an integrated amp and a receiver these days?... one computer chip?... Their quality still isn't really high-end.
If you want better than average sound and power a budget, I would look at a nice, new receiver like this one... http://www.amazon.com/Harman-Kardon-HK-3490-Receiver/dp/B00198F89A/ref=pd_bbs_sr_1?ie=UTF8&s=electronics&qid=1232644379&sr=8-1 Even has digital connectivity (handy and rare on a stereo receiver), a sub output and a simulated surround mode. It would probably sound better and last longer than any 10 year old Pioneer, Onkyo, etc... probably for less money...
If you really have higher-end ambitions than that... I would look at gear from Adcom, Rotel, Outlaw Audio, Cambridge, NAD, Parasound, Jolida if you like tubes, etc... either new or used.
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