If you're going to get any "aftermarket HID-Look" bulbs, I wouldn't waste too much money on the brands, as they are all pretty much going to blow-
I have seen/tried Cool Blue's, Silverstars, PIAA's, and Raybrigs...
The PIAA's blew, the Cool Blue's were great... the Raybrig's I had were too pinkish for me... You're better off getting a set of Silverstars. If you want improved lighting. HID's would be the only way to go, but you'll blind the f*ck out of everyone on the road.