Celestion 12" speakers.
I bought a second Vox AC30 (a CC2 this time). It has original Vox speakers (made by Wharfdale) and it was suggested I put Celestion Blue's in it. $320 each. That's more than I paid for the amp. I've yet to crank it up and compare it to my AC30C2 that came with Celestion Greenback's ($149 each).
On top of that the Blue's are 15W speakers and the Green's are 25W speakers. For a 30W amp it seems like the Blue's may not be up to the amps output. Am I missing something?