Which bass should I get to modify?

Do you know which specific model? Not to be contrary, but when doing the aforementioned research, I heard a considerable difference between their "Classic" and "Original" designs. Based upon what I heard, the Classic pickup had a considerably richer and bolder sound. (…especially when it's in Series mode! Holy crap, it's sweet! :drool:) However, if neither is the sound you like, that's cool.

All that being said, and in light of all the other brands that offer dual/quad-coil humbuckers, I'll still stand by my suggestion to go for the Edge 2. ;)

I don’t remember but I didn’t like it that much. I was also looking at the Yamaha TRBX174 and Ibanez GSRM20. These basses are cheaper than the Dean. Would you recommend these over the Dean?
 
I don’t remember but I didn’t like it that much. I was also looking at the Yamaha TRBX174 and Ibanez GSRM20. These basses are cheaper than the Dean. Would you recommend these over the Dean?
I know next to nothing about those models. I'm primarily a Fender/Squier guy…it's an ergonomics thing.