Sonic Frontiers Power 3 can be had for <$3500 if you can find them, they are very good for the money.
BAT 150SE is superb if 150 wpc is sufficient, BAT has tremendous drive and speed that sounds more powerful than 150 wpc. you can start with 75SE and upgrade to 150SE if you like the sound, you gain more than power when you bridge. BAT can be further upgraded with some aftermarket parts, there are a few threads on audiogon discussing this topic and result is well worth the price.
BAT 150SE is superb if 150 wpc is sufficient, BAT has tremendous drive and speed that sounds more powerful than 150 wpc. you can start with 75SE and upgrade to 150SE if you like the sound, you gain more than power when you bridge. BAT can be further upgraded with some aftermarket parts, there are a few threads on audiogon discussing this topic and result is well worth the price.