Easy to drive large speakers for Rock & Roll?

I am looking for a pair of easier to drive speakers for Rock music, I like to listen to my music pretty loud. I have a pair of Hyperion 938's & while I love the way these speakers can rock & go low I find them a little too bright for my tastes. I am driving them with a Rogue Atlas stereo amp using EL34's, these speakers are very easy to drive which I like. I am looking for a pair of speakers that I can drive with about 50 watts of tubes, had plenty of solid state amps & just love the magic of tubes. I like dynamic speakers with large drivers. I have had VS MK4 jr's, Vandy 2CE's, B&W's & now the Hyperions. I have heard some Klipsch speakers & don't want to really go that route either. So what are my choices in the under $2,000 range used?