Amp for Dynaudios

You guys are so lucky... I live in south america and browsing audiogon makes me feel like a kid ogling a toy store through the glass! I have just a few pro audio dealers who do high end on the side and importing means paying freight+duties+tax... and I hope this story makes you want to help me out of compassion and not temp me with alternatives ;)

I am interested in buying Dynaudio Acoustics BM6 or BM15; B&W and JM Labs are alternatives but are relatively more expensive. My current amp is a pair of vintage Luxman tube monoblocks with 6550s wired in triode, which put out about 45W (est). My understanding is that these speakers are power hungry, so although I don't usually listen at high levels, I'm not sure if the amps will "motivate" them.

I am willing to switch to SS amp to make these work, using a Pas-3mkII preamp, and the available alternatives are:
- Wire the Luxs ultralinear for 80W (est).
- A new NAD C272
- A used McCormack DNA-0.5
- A vintage Bryston 3B (non ST)

I have no experience with these ss amps and auditioning is complicated, so your recommendations will be VERY appreciated. Thanks in advance.

Luis