Mono block amplifiers from VAC and McIntosh. Speaker ideas?

About a year or so ago I inherited 4 Mono block amplifiers. They are from VAC and mcintosh. What speakers would go best with both 300 W tube VAC and 600 w  solid state mcintosh. I’ve been using Macintosh and finally got around to fixing all the VAC tubes so now I have a choice of amplifiers.