I have the CC2 with the Wharfedales.
There are a couple of differences between the CC2 and the C2.
The C2 cab is NOT plywood like on the CC2. At first, you might think, no biggie, but in the long run, parcticle board can crumble and if wet/humid, can expand and weaken. Its just not a good choice for an 80lbs amp, unless you will only be using it in your living room. The particle board cab is the biggest drawback to me. I have changed many back panels on older 4x12 cabs because the corners were severely damaged and when I replace them with a nice birch ply panel, they come to life it seems.
The toggle switches are plastic on the C2, metal on CC2.
SS Rectifier on C2. Some say its for reliability, but again, this is a cost thing. I've never had issues with the rectifier on my CC2 (but I don't use the standby feature). To a lot of Vox owners, the tube rectification is part of the cranked Vox sound & feel.
The C2 has slightly less features than the CC2, features like the "low bias" switch.
The Wharfedales are a very good speaker IMO. I didn't like them at first but once broken in, they really sound good. Give them some time and they'll be fine. Also, you could just upgrade the CC2 speakers in the long run. Mounting the speakers on particle board (C2) vs void free ply will also make a difference in tone.
Hope this helps.
Amps: '95 1987x Rebuild, '87 2550 Jubilee, '97 JCM2000 DSL50, '83 JCM800 2204. Vox AC30CC2.
Cabs: '79 1960b Blackbacks, '86 1960a G12T-75/Century, '82 1960a G12-65, '90s 1960a G12M/G12H 70th, '80s Rebuilt silver V30s.