Single Driver Recommendations + amp Qs, Omega?

Thinking of trying out a pair of Single Driver speakers. Looking for a bookshelf monitor and the Omega Super 3R seemed to pop up quite a bit in some older (5+ yrs.) posts. Looking to find a used pair at $500 or less. Besides the Omega, anything else I should look for? Are there British single driver monitors in this range?

It seemed most were using low output tube amps to drive the Omegas. Can the Omegas or other single driver monitors be driven with a solid state amp? I have a Magnum Audio MF330 Mofset 2x150W amp. Is this amp OK for Omega's or other single driver monitors?