Hey fellas, I am having serious thoughts about purchasing a Marshall JTM45 head and 4x12 greenback cab. Im using a 50W BB (bluesbreaker) RI from 91 these days, and a few things bother me about it. First of all it wont really break up unless I turn it waaAAay up (!) and beeing a 50W amp it blows everyones head off. Secondly it seems to get a little tonally "thin" when I'm playing classic rock as ACDC/Hendrix and that sort. Dont get me wrong, I love my BB and I'm nok thinking about getting rid of it. Would a 30W JTM45 break up earlier and does the head'n'cab JTM45 setup give a better bass response for rock? If anyone has an opinion please help!