My budget is about 300 dollars, and I'd like something in the 100 WPC range, so I will likely buy second hand vintage.Another possibility to consider, should one appear for sale, would be a Carver M400t "cube amp," which is rated at 200 watts/channel and I believe typically sells for slightly less than your budget.
That was a 1980's amp whose "transfer function" (the relation between its output and its input) was intended to emulate that of the highly regarded and very expensive pure class A Mark Levinson ML-2. It didn't quite succeed in that regard, as might be expected, but I owned one for a number of years and its sonics were very respectable for its price class (and higher), at least when used in conjunction with easy to drive speakers. (I couldn't find an impedance curve for your particular speakers, but they are rated as "8 ohm compatible," and I found additional reasons to suspect they are not difficult loads). And it sounded fully as powerful and dynamic as its 200W rating would suggest.
DO NOT, however, buy any of the earlier "non-t" versions of the M400, which were quite poor sonically IMO. And I have no experience with "t" versions of other Carver models of that era which were designed to emulate the transfer function of a Conrad Johnson tube amp (which I suspect would not be a good match for your speakers even if the emulation were perfect), rather than the transfer function of the solid state ML-2.
The M400t, btw, did not use electrolytic capacitors for energy storage (using the magnetic field of an inductor instead), which eliminates a significant concern about condition that would apply to most other amps which are that old. The amp I owned, btw, is still going strong after 30+ years, in the home of a relative.
Regards,
-- Al