Ok, I've gone through more "trials" of bass equipment than I care to mention in the past 3 years, chalk it up to inexperience and not knowing what "my sound" is. But now I realize that the tone I like best is that which I get through headphones and my computer. Also, I like my sound just going straight to the board through our PA. No effects, no EQ to speak of, just clean and even. I think this means hi-fi. I love my Ampeg B100R, but it doesn't have this sound, it's more of a warm, lo-mid type of sound. I figure I can get this sound from a hi-fi system by EQ'ing the other frequencies out. So my question is....what, in a medium sized combo, will give me this sound? I'm thinking maybe the Nemesis 2x10, the Peavey BAM (though it's not really been road-tested by anyone) or maybe the Carvin 2x10, but think Eden is more than I want to pay. I guess I just don't dig the "jacked up" sound of most bass amps, and how their tone is jacked up to, I guess, emphasis bass.
In the hi-fi category, I think EA might be the best bet for you if you're looking for a mid-sized combo. They've actually got some combos that sound huge, but are small by comparison to others that sound not as big. I'm also a big fan of EBS. They make a couple of combos that are supposed to be great, though I haven't actually tried the combos (I do own an EBS amp and cab, which I love).
The new EA equipment isn't as Hi-Fi as their old stuff but it gets a little louder. Definitely worth checking out. I own a pair of Aguilar GS 112's and they are the best sounding small cabinets I've heard. I can't say enough good things about them. I just bought them can you tell? I checked them out with the new EA iAmp 350 and that combination is so much better than any combo I've ever heard. I recently heard someone playing in a club with that rig, a pair of GS 112's and an iAmp 350, and it sounded great. He was switching off between upright and electric too, so this rig does it all as far as I can tell. Bang for buck the Eden Nemesis is very cool but nothing in that price range is really HI-FI...