The best coupling caps in power amp ?? Mundorf, Infinicap ??

Any thoughts about the bass response of the vcaps vs duelunds? I replaced the solen coupling capacitors in my Coincident Franks and eventually (about 200 hours in) went back to the solens because I'd lost significant bass. The duelunds are tinned copper cast...

We've not seen the bass restricted in any way with the V-Cap Cu caps. Its just very neutral. They are still the best caps we've heard- and one of the most reliable.

Thanks Ralph.

Hey Ralph, I cannot fit Teflon caps in my amps, I have Mundorf supremes in there now and that is as big as I can go, do you have a cap around the same size that you think sounds better than a Mundorf supreme? Have you any experence with Audyne Reference? 
Thanks, Christopher