integrated means you can tie it into the video system pretty easy. beastly is more solid, more power, but fewer video features. I personally don't run video to the receiver, so I'd rather spend money on power than fluff.
some people need what I call fluff and are willing to take less power at the same cost. It just depends on your priorities.
I have two refurb Denons and a refurb Phillips 37 inch LCD. I have had good luck with them. I buy new sometimes too.