try the PIAAs or IPFs, im currently running a set of IPF 5000k bulbs(not hid), and their light output is = 120/160w(its still a 55/65w bulb) and they are doing just fine, standing up to the abuse of old logging road, 4wheeling and lots of night time driving. i do search and rescue and so spend a lot of time on back roads and wash-boarded roads and have loved the IPFs. they are a little spendy, i think i paid like $50 for them(normally like $130+) but if you dont want to spend that kind of money then get the PIAAs they are just as strong and almost as bright and they can be had all day long for around $50-60. ive had the Sylvanias and didnt like them, they burnt out way too fast (with in a few weeks) and they told me it was because i installed them wrong.... both PIAA and IPF will stand behind their products.