Spendor S8e Amp Suggestions.

I'm looking to buy a new amp - likely tubes - to drive my Spendor S8e's. I've heard these speakers really sing with as little as 50 watts, so I'm comfortable that an amp with between 70 - 100 watts would do fine. For those of you driving the older style SP series speakers, please keep in mind that the S series is a very different animal. Could anyone comment on the following amps as mates to these speakers:

Cary v12 series - I've read that the SLI80 integrated is NOT a good match, but haven't heard anything about the V12.

ARC VT100 series

Mac MC275V

Any of the Prima Luna monos.

Any other great suggestions. Pre-amp is yet undetermined. I'm rebuilding this around the amp and speakers. I'll figure out the pre next. Thanks!