Okay, thanks everyone for their responses! I think I'm not going to risk
the Wal-Mart Paint. Now I have 2 options instead:

1) Lowe's Paint (Which I hear is Olympic) $75 for 5 Gallons

or

2) Benjamin Moore from my local paint store at approx. $25-30 per gallon.

Now I heard that BJ is absolutely the best there is, and I like that. I'm
going to be using about 10 gallons on my house and that would give me about
a $100-150 difference in price.

Opinions? Olympic any good or what?