Waxes

Which waxes are good to use other than Tamiya MW which I can't find right now

Go to wal-mart or an auto store and get some "3m Finish Restorer". I find it works best when you wetsand the paint with 1500grit sand cloth, then dry, and then go over it with the finish restorer. The stuff has wax in it, but is also a rubbing/polishing compound. Works great to take out scratches if you clearcoat your models.