Tube amp for ML Prodigy's


Does anyone have any experience or advise on a great power amp for Martin Logan Prodigy's. I started with a SF Power2 then went to a ARC VT200 which was an improvement but I still feel something is lacking. Is there an OTL that will work with these speakers? Am I beating my head against the wall here? I listen to a variety of music, Rock, acoustic, jazz, etc. etc.
cmo
Thanks for all of the suggestions. I wonder if anyone has tried the VT200 like I am using with the Prodigy's or other ML speakers? If so what do you think?
I have the Odysseys. My amp is an ARC D-250 modded by Great Northern. They sound magical together. Speak to Steve Huntley at Great Northern (www.greatnorthernsound.com)about the VT200's. He may be able to fix you up - not inexpensive, but takes the amp to a whole new level. He may have other recommendations too - very knowledgable.
Thanks Snowranger, I will investigate. It's not that things don't sound good, in fact they sound great. I am just wondering if they can get better. The rest of the system consists of: ARC LS25II, ARC Ref Phono, VPI Aries, Theta Miles (balanced), Nordost Red dawn/Blue Heaven.
Has anyone tried the Antique Sound Labs "Hurricane's" with the Prodigies out there?