I've tried my 250Tis with McIntosh MC7270, MC275, MC2205, Parasound HCA-3500, Hafler 9505 (single and bridged), and Sunfire 300 amps. Believe it or not, I've come to like using the MC275 best of all!
Yes I know I can get better bass out of the solid state amps, especially the two Hafler...