I am shopping around for an Eden 210 and 115 stack. This seems to be the best combination for me for portability and versatility. Here's the scenario: I play fingerstyle in a r&b quartet with an alder P-style bass I scratch built. I am after the old school tone of Dunn, Jamerson, et al. At Dealer "A" I auditioned a WT-400 head with a 210T and 115 (which one I don't remember, but it had no tweeter.) I didn't have to work very hard to dial in a sound that rocked my world. Plus, it seemed very loud with the master set at 11 o'clock. At Dealer "B" I tried out a WT-550 head thru a 210XST and 115XLT. I tweaked the EQ considerably and got a sound that sounded pretty good, but not great. The best way I can describe the sound is kind of hollow and a bit dry with a lack of "bloom" or swell to the note. With the master set at 12 o'clock, the volume seemed decent, but not Earth shaking. I went into Dealer "B" prepared to be bowled over by the newer products. I am left wondering why the two setups affected me so differently. Could it be the difference in the acoustics of the 2 locations? Is the 550 not as "tubey" as the 400? Is the more hi-fi 210XST missing some warmth (call it distortion, if you want to) of the lowly 210T? Or maybe my head was in a different place on those 2 occasions and I simply heard them differently.