I've generally heard good feedback on the cab. I mean, it's V30's, can't really go wrong with quality or even with tone if GnR is the kind of stuff you play... As for the cab woods and dimensions, I haven't heard anything bad about it... I mean, plywood is plywood, lots of cabs that aren't like really expensive use it. And anyway, the speakers alone will be worth the price.

Guitars: Ibanez SV5470F, Ibanez Xpt700, Fender MIM Standard Stratocaster ('04-'05), Jackson Ps-2
Ashton AG200,
Amps: ENGL E530, Bugera 6262-212,
FX: TC Electronics G-major 2, Behringer EQ700, Morley Volume / Wah