Fender Super Champ XD or Vibro Champ XD?

[audiodrome]

I'm going to be buying one of these amps this week so I need to make up my mind fast. I desperately need a small backup "electric" amp for my acoustic gigs and my old Fender Sidekick ain't kickin' it!

Obviously, I would prefer to go for the cheaper one (the Vibro Champ), but will the 10" speaker vs. the 8" speaker and 15W vs. 5W make that much of a difference for me soundwise at a small acoustic-based club gig? I mostly play clean, so is the extra headroom that noticeable? Would I really be getting that much more for another $100? I have my AC30 and Super Reverb for larger venues so I'm not looking for an "everything" amp, just a small practice/gig amp. Are there any other differences to consider? Thanks!