I dindn't know the zodiacs were out. I'd love to see, play one of them.
Something you might want to think about. Flea was one of my main influences, and for reasons unknown I kept gravitating towards basses that weren't giving me what I was looking for. I think it took a while for my ear to develop and really know what was going on in regard to sounds of different basses. Anyhow, I had an old fender, an alvarez, a warwick, and an american P deluxe and I used to stand on my head with all those basses trying to get them to sound like what i was hearing in my head. Wasn't until I bought a Musicman that I felt I arrived. The sound I was always struggling to get with the EQ on my bass and amp was just there, instatnly, with no hassle.
A lot of things can affect the way a bass feels and sounds in a store, so while the 2 basses you played may have jumped out on you, I wouldn't count that as an accurate guage as to whether these will be basses that will ultimately make you happy. Not saying this to throw a wrench in your works

, just to possibly save you a little future frustration.
For the sound you're going for you might want to save a little longer and go for a MM of some sort. A sterling by musicman will give you exactly what you want, and there are other basses out there that might suit you little better. I'm not an Ibanez fan, but I recently picked up an ATK for dirt cheap that is blowing me away.
Bottom line, while I completely and totally understand the desire for new equipment, you might want to hold off just a bit longer before pulling the trigger on something. I could almost guarantee that if you go with the epiphone you ultimately won't be happy.