Hi guys! I have a local store bringing in a Marshall JCM 800 4210 1 x 12 for me to check out. I think it was made in 1984?? I know that the serial number starts with a "S"... I also know that it does have EL34's. I used to own a 4210 going back a few years ago, but it had problems and it had 6550's...I didn't give it much of a chance. I much prefer EL34's as well... I currently own the Marshall JTM-60 2 x 12. I like it, but I don't really LOVE it. It can sound a bit brash, for lack of a better word...It really doesn't knock me out and I certainly hate the tube layout and I know they are prone to problems. I'm not going to keep both, so I would like to get your opinions as to which one you would prefer (tonally).... I may be in the minority, but I do prefer Marshalls that have channel switching, reverb, amp drive and combos..so the 4210 is right up my alley to compare with the JTM-60. I know, they are not the greatest amps..I'm really a Fender guy just wanting a descent Marshall combo from what I have to choose from. Thanks so much for your help!