I would not worry about putting a new USHIO lamp in the old housing, however most USHIO lamps you get is fake china copy products, and most people will have a hard time to tell the difference, so you need to check every single detail and finish, and measure lightoutput to see if it adds up, the safe way is buying complete original lamp, i just ordered a new original X500 lamp and a USHIO lamp in unoriginal housing, and it was for sure a bad copy of a USHIO, sent it back and another one is on its way from myprojectorlamps.euMy preferences have always been different to everyone I know on here: I started at -15 and the furthest I went up was to around -6. At various points in time, I gained brightness back, as can happen with lamps. So, I was able to hover at around an average of -10 I would say, for most of my usage till the lamp expired.
This is good to know. thank you kindly for this information, @jfinnie. So, do you recommend folks get a new lamp + housing if they can afford it? I cannot afford the housing, hence trying to seek out just the lamp. Is there a a chance I will experience a lower life next time around by installing a new lamp into my existing lamp housing?