Chinese bulbs off eBay (~$15) or whatever can look pretty, but the light output is not there. Had mine for a few months until I got rid of the car so don't know about longevity. The Phillips and things for 50 ish bucks online are ok, nothing to write home about. They only lasted a few years until they start "winking'. I have Osram Xenerac (xenondepot) in my IS now, and those things are brighter than the old xenons AND fogs combined. Yes, they cost a pretty penny, but they are like a really good bad decision, didn't want to, and probable shouldn't have, but so glad you did.
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K VR1 20w50,1515
14 RX450h 30k PP 0w20,NAPAG