Recently I discovered a new level of ultimate tone by running my Sansamp BDDI through the Effects Loop on my Mesa Bass 400. It's a gnarly aggressive metal tone that makes my B string sound truly explosive. My only complaint is that, as is, it is too aggressive for the tapping I do in the higher octaves. I've been considering moving to solid state for a while- less hastle, no worries about super expensive tube replacements, etc. Would a GBE 750/1200 combined with other technologies like a Sansamp BDDI (effects loop perhaps) or Big Muff thrown in somewhere provide similar grit? I believe both these heads have fairly flexible pedal boards- with two channels I could dial in a mellow clean tone for tapping.