I know the fender standard whammy bar doenst keep the guitar fully in tune but is it manageable? Im starting to like diveboms and all those dime bag squeals and i was wondering if i could just get a standard fender guitar with the whammy bar or would i need to upgrade and get something with a floyd rose?

Google Strat-style trem set-up's and it'll show you what to do. I've seen guitars with strat-style trems that were abused like a Floyd and the tuning held.
Quote by Dirtydeeds468
People don't like Dave Mustaine because he created something that owned Metallica in just about every single aspect of thrash metal.

it's true
High end Ibani or FR equipped guitars will keep in tune much better than a stock standard strat. Better pickups help too.
you may wanna use a floyd rose trem if your going to be pulling off huge divebombs or huge ass bends