I got a set of the "Xenon SuperWhite" bulbs. I believe they were the Koba brand. I went with the stock wattage to avoid any possible wire damage.
From the outside of the car they do look cool, but there is one word to describe their performance--SUCKS. Either stick with stock bulbs, or take the risk and get the higher wattage "xenons."
By the way, I have no experience with silverstars or any name brand whites, but I hear they suck in the rain.