Well keep in mind that EMG's are active pickups, so if you don't already have a battery setup installed in your bass you'll need that for EMG's.
If you do already have an active setup, you'll more than likely need to replace whatever it is you have with something that will work with EMG's. Depending on your preamp, you may only need to change the volume pots.
Sound wise..I'd go with Barts but only if you have a preamp since they are lower output.
My final answer would be to get DiMarzio Area J's