I agree with Cipherjuris that the Lamm hybrids are incredible. (And he's right, that they are indeed pricey.)
The full class A 110 wpc M1.2's are great, and slightly (very slightly, IMHO), better than the Class A/AB, (albeit heavily biased into class A), M2.2's, but the 220 wpc M2.2s have double the power and will drive virtually any speaker, and sonically, they are very, very close to the M1.2s. (I like having lots of power reserves for those peak demands.) The M2.2s are one of my two favorite amplifiers, (the other being the VAC Phi 300, which is a fully tubed design). Used, these go for around $11K.
If you can't afford those, the predesscors to the M1.2/M2.2s (i.e. the M1.1s and the M2.1s) are very close sonically. However, they do have just a bit of darkness in the upper treble response, so careful system matching is required. (I own the M2.1s, and they sound incredible, but it took quite a while to find the very best speaker cable to reduce the dark sound to a nearly inaudible level, that cable being the Nordost Valhallas.) Used these go for around $7K.
And, I agree that with a nice NOS 6922 tube in each amp, the sonics get even better. (I use an Amperex pinched waist 6922 myself)
My two cents worth anyway.
The full class A 110 wpc M1.2's are great, and slightly (very slightly, IMHO), better than the Class A/AB, (albeit heavily biased into class A), M2.2's, but the 220 wpc M2.2s have double the power and will drive virtually any speaker, and sonically, they are very, very close to the M1.2s. (I like having lots of power reserves for those peak demands.) The M2.2s are one of my two favorite amplifiers, (the other being the VAC Phi 300, which is a fully tubed design). Used, these go for around $11K.
If you can't afford those, the predesscors to the M1.2/M2.2s (i.e. the M1.1s and the M2.1s) are very close sonically. However, they do have just a bit of darkness in the upper treble response, so careful system matching is required. (I own the M2.1s, and they sound incredible, but it took quite a while to find the very best speaker cable to reduce the dark sound to a nearly inaudible level, that cable being the Nordost Valhallas.) Used these go for around $7K.
And, I agree that with a nice NOS 6922 tube in each amp, the sonics get even better. (I use an Amperex pinched waist 6922 myself)
My two cents worth anyway.