Speaker recommendation for Atomic Reactor 112-50

I've got one of these: http://www.atomicamps.com/images/manual_50w.pdf

And just last week finally blew the speaker.

They say it's a "custom design Eminence 12" 8 ohm with 200 watts handling"

It's a dual 6L6 poweramp (50 watts)/speaker slave in an oversized cabinet, I'm using it with an ENGL preamp. I play mostly classic and pop rock (medium gain tubescreamers, etc.) - what speaker would you suggest to replace the stock?