Hi. My quest for a new amp continues.... I am now interested in getting a really loud head and have come up with a choice. A second hand Mesa Boogie 400 + (12yrs old) or a 4 month old Ampeg B5R. Now I appreciate that they are both seperate beasts with the Mesa being all valve. The Ampeg seems to have a lot going for it as solid state heads go and with the inclusion of a distortion channel plus a sub octave circuit, it goes some way to giving me the integrated FX option that made me interested in the SWR Mo Bass (see my other threads) but obviously is does not have the beautiful thwump of a valve head. Now I have tried a brand new 400+ and was taken by it. It was a really satisfying amp. However I have not been able to try a B5R so I am keen to know how it would compare in terms of power and tone. The Ampeg has got portability and reliability on its side but does it sound as good?