Upgrade from Sonus Faber Venere 2.5 to ?

If you like your current setup why not just move up to the Venere 3.0 if you're wanting a little more bottom end and extension? Between your amp and speakers are you sure the amp is the stronger of the two? Depending on your room size a larger speaker might not be the first step. What are the dimensions of your room?

Thanks for the suggestion. My room is 14' x 18', speakers against the 14' wall 8' apart and 8' from the listening position. The amp certainly sounds great. Before the AA Maestro 70 I was driving the SFs with AA Verdi 70 and DK Design VS-1 Ref. MK II (150 @ 8Ohm). The Maestro 70 is much more musical and can drive the SFs beautifully. So, IMHO amp is good. 

I auditioned the PMC Twenty 23 driven with Rega (not sure of the model though) that puts out 140 into 8 Ohm, but was not impressed enough to make the switch. I'm going to audition them in my listening environment next week, but I'd like to get some suggestions from others.

Check out Dynaudio. There are several models in your price range.