Your speaker is pretty sensitive and a realtivey easy load not dipping below 4ohms.

Why not try a tube amp? The Jolida 302B for example would be more then enough power and the others on your list would only give you roughly a 3-4db gain which is barely audible - even if that since the speaker can only take 100 watts.

In fact the 302B is prety high power at 50 Watts and retails for $950US http://www.jolida.com/catalogue/jd302b.html

The Antique Sound Labs AQ1003DT is $49.00 more and comes with a subwoofer out and remote control - is built a bit better and a better warranty. They drove the more difficult CDM 1NT's well so your spekaer should be easier. http://www.divertech.com/antiquesl.html#INTEGRATED