j.vocaty, I had Silverstars in mine until one went out. I replaced them with Sylvania Xtravision for alot less and don't see the difference between the two.
Train trac, I had ine in for about 3 years before one of the highbeams went. I liked them but couldn't get myself to pay that much again for them. I opted for the Xtravision's and they are 30% brighter than regular Halos and half the price of the Silverstars. Haven't seen much difference between the two.