so if i do get it, my cpu won't bottleneck it that much? if it's very minimal, i prolly wont notice it that much then but is the next best option a 5750 or a 4850?
It will be fine. Al PC's have bottleneck. You will notice decreased performance in games that are multi-threaded the most. These run better on quad cores and are starting to be more prevalent. For example Bad Company 2 runs better on a quad core than a dual core.
between a 5750 and 4850 the 5750 definitely wins.