Bone, I'm running the MF-2500 with the 14LS. I auditioned the 17 (updated 14) and while it's nice, I don't find it improved enough over the 14 to warrant the purchase. I am, however, moving toward the purchase of the 16LS--more of everything (including twice the price, unfortunately); truly a "mini" ART. If you want a perfect 14 with extra matched tubes, let me know at gat622@aol.com. BTW, the Premier series preamps are an excellent match with c-j tubed amps.
