Strang is good, unless you want to learn some theory along the way. Don't get me wrong, he's really good at explaining calculus conceptually, you're just not going to be doing much in the way of proofs.
To be honest, my advice is to look at two or three texts roughly simultaniously (if you have the time), so you experience more than one way of looking at the subject. The prior posters have recommended some good ones. I would probably add Thomas to that list as well.
One other thing: I honestly don't see why you couldn't at least *look* through Spivak as a beginner, as long as that's not the only text you use.
FV89
EDIT: Apostol is wonderful as well (though his initial presentation starts with integration coming before differentiation)! His style is considerably different from Spivak. The books (it's a two-volume set) have more material in them; for one thing, you can gain a fair knowledge of linear algebra as well if you work your way through both books.