I currently run dipole speakers for my rears in my system. I have Energy Veritas 2.0R's. They have the option of dipole/bipole/direct. I just keep them in the dipole. It sounds great to me.
I cannot imagine that Denon amps are anywhere near as good as the Outlaw amps. I bet that the weight of the Outlaw amp is really close if not more than the entire Denon receiver. Just because a product says that the wattage is the same does not mean that they are similar. When I upgraded from my Yamaha receiver to Parasound amps, there was no comparison in sound. Now the amps were rated exactly the same, but the seperate amps sounded fuller and had a lot more impact with greater detail. I would strongly suggest going the seperate route.
Jeff