I currently have PIAA extreme whites (H3's) in my Beretta and they're great bulbs, not sure on the color match though for the Saab.Is durability an issue with the PIAA's?
As far as durability, I've always had atleast 1 burn out per each pair in less than a year. Of course, vibration and ride quality on the Beretta may be a factor, it's not as smooth as the 9-3.
On a positive note though, tirerack is pretty hassle free on the warranty, if you're under a year, you call them, give your phone number on your account and they let you ship them back, and CREDIT you the purchase price (or atleast they always did for me.)
(I wouldn't suggest you do anything unsavory or grey area, but the package for the bulbs doesn't have a date on it, if you know what I mean. So if you miss the warranty date and you happened to order another pair...)