I can confirm, as it's my first month using this receiver, it's really a good one, fast, pip in real hd with no lag and lot of other good stuff that will be certainly improved by images teams, including the lcd display which is a good feature.
But, if you really plan to buy a new receiver, you can try to wait a little moment, maybe you can see if the duo 2 will be on sale very soon, and if you can't wait, just buy the quad
I NEED at least 3 tuners, and it seems it's impossible to have more than 2 yet... :-(
I have a Ultimo, I have had several DB's, but I have never been 100% satisfied with VU..
I have both of them. Quad is a great box it is a lot faster than my Ultimo, boot time three time faster than Ultimo, and cheaper . Oh I forgot it is nice and small not bulky like Ultimo and it hase a external power supply so no fan no noise and no heat