If you need it only for movies,then Onkyo is better.I took short demo of 390 & found it is not as clear sounding as other Denon AVR.
Still for both mov & music 390 can be better,still try demo with your regular CD/DVD & decide...
I am planning to buy a Samsung Led 46" Series 7 and a Pioneer dvd player either 410 or 610 and probably a Tata sky stb.
In fact I am getting this choice of Onkyo or denon with the LED Tv instead of the 22" LCD that is given free and this are the only models available at the shop rest are all dvd integrated home theatres so choice is limited. I have never come across the Onkyo 5205 at any of the big shops I visited like E-Zone, Croma, Reliance Digital, Vijay Sales Etc.