KT120 vs KT150

Hi Fellow Audiophiles . I was curious if anyone out there has compared the Tung Sol KT120 vs KT 150 side by side? Does anyone out there also know a place where I can buy 2 MQ at some discount.Thanks for your time and thoughts
Bumping this thread; suspect that 9 months ago both were too new for opinions. Anyone done this, differences heard?