I am considering a tube amp for the first time, specifically a Mesa/Boogie Buster 200. Having been a solid state guy all my life, I know nothing of tubes and I am looking for help. How long does a typical tube last? How hard is it to change the tubes? How hot do the tubes get and how long until I can touch them (cool down time)? Are 200 tube watts louder than 200 solid state watts? Also, if anyone has any experience with the Mesa/Boogie Buster 200 then let me know what you think. Thanks.