I wouldn't use any of those amps with the 1.8 given the low impedance and low efficiency. IMO, I think you'll be disappointed with all of them especially in their inability to control the bottom end. My $.02; others may think differently.
Think I'm going to try tubes...
I just hafta know what all the fuss is about, however there are no tube shops near me and I won't be able to preview any of them so I need your advice!! I have the dynaudio contour 1.8 speakers which aren't very sensitive (86db)but are impedence matched to 4ohms so it shouldn't put too much stress on the tubes. I was thinking a KT88 pentode since they seem to offer the highest output for the price and I've narrowed it down to three choices- Prima Luna II, Jolida 502b and the ASL AQ1001DT. Which one do you think will be the best mate with my Dyns and why? I'm realistic and willing to give up some of the speed and impact of my solid state gear for that tubieness, however it must be able to play some rock without sounding like molasses.