+1 on The Arts! Great Guys, great guitars!Each has their own "flavour".
Lately, I've been using The Arts Music on Eagle St in Newmarket.
Nice atmosphere, great guys and a decent selection of Gibson, Epiphone, Fender, PRS, Musicman, Marshall, Vox, Koch, Crate and some others. They don't carry Jackson or Peavey, if that's what you're looking for.