You also might want to consider the new Belles 350A amp (actually 250W/ch). It offers more transparency and dynamics without loosing the tube-like palpability of the 150A amp. It's not just a power thing; the 350A really sounds like a different (better) amp than the 150A. Might be hard to find a Belles dealer though, and I haven't noticed any 350A's up for sale yet. As for Aragon, it is definitely the better choice for the LF over Belles.
