Tube-friendly speakers


I'm currently using a pair of Magnepan MMG's and a Hsu Sub along with my AES Six Pac amps. I'd like to move up to a larger set of Maggies, but it's been suggested that 60W of tube power would not be enough.

What are some speakers that would mate well with these amps? I do like the "planar sound". I'm most interested in something full-range, but could run a pair of monitors with my sub.
roblanger
Some of the speakers in my list do not have 8 ohm nominal impedances (Merlin for example, which I believe is 6 ohm nominal), but they are still all tube friendly speakers.

Thought I'd cop to it before someone called my on it.
if you are hooked on the planar sound, you will be pleased with a larger amp as well...even on the mmg's.
Zu needs to be on that list as well.

12-16 ohm impedance and very high sensitivity for its models.