what would be the difference besides obviouse placment and shape of each. pros and cons of each? is one better for something than the other?

 

Sway bar reduces body roll by tying the front suspension(on the struts) together...a strut brace increases the chassis' torsional rigidity(less flexing). You'll notice a much bigger handling difference by getting a sway bar. So get sway bar then strut brace.

 

I'd go with the sway bar first as well. In particular, you'll probably get more-noticeable results by swapping out the rear sway bar. Most people just leave the front bar stock.

 

Going for a heavier rear sway bar will help cure understeer. Dont bother changing the front one.
The strut brace doesn't do a lot, but certainly wouldn't hurt.

 

thanks! I was thinking of getting the H & R rear sway bar. Its for the r53 but, everyone has said it same setup and it will fit.