I'm not a fan of sorcerers because of their limited spell selection, but I do love wizards. And honestly, resting isn't that big of an issue, at least not since I got past the first few levels. Between my familiar, companion, and crossbow, I have no need to use spells on weaker enemies. For medium level enemies I also have a ton of low level spells to spam plus wands, so I usually only bring out the big guns when fighting extra tough enemies or if I just want to see how a new spell works. If anything, my wizard's had an easier time than my ranger/barbarian/weaponmaster.