Nas,
I have lived with an Esoteric DV-50 and a Denon 5910CI for a couple years now. They are different players. I clearly prefer the Esoteric to the Denon, as evidenced by the Denon living in the bedroom system and the Esoteric more often in the main rig in the living room.
The Esoteric is more detailed and has much better bass control, especially on SACD's. The Esoteric offers more air and separation as well, and for the price of $2K (A DV-50s in on the gon now for this) they are a steal, I paid $4,500 for mine new and still think it was a buy at that!
You also get the benefit of much better build quality with the Esoteric, though it has a hard power button so you can't turn it on and of remotely.