Hey Newf:
Well I must say, it is good to see you considering a move to a nFusion unit. This will provide you with an opportunity to reaquaint yourself with B3V.
With respect to the different models, there are:
The original Nova unit (small silver one), this unit is discontinued, but still supported, then there is the Solaris, which is the exact same unit as the Nova, its just painted black, then there is the Phoenix, which is a few $$$ more than the Nova or Solaris, but offers a better quality tuner and more memory for EPG etc ... this unit is non HD but delivers a nice picture on all SD channels.
If you have some extra money, own an HD tv, then you may want to look at the nFusion HD unit, this is the Rolls Royce of nFusion products and is priced in the mid 400$ range.
As for were you can get one of these units to, I'll do some checking for you
Creative Genius