Have a mint JCM 900 4500 50w high gain dual reverb seller says it has 6l6 tubes. Has the picture of the tub with 5881 labeled on it. its a local sale for a good price. question is If you where to add a 900 to your collection would this be a good one or what model of the 900 seem to get the most thumbs up. I see a lot of likes and dislikes. Is it really that bad of a amp? early Christmas money is burning a hole in my pocket LOL. Thanks and Merry Christmas !!!