I have only used both type pups w/ a trim TP. 2 different sounds really (to my ears). The EMG's had more of a growl/snarl thing going on where the Barts (the Spector Custom Wound), had an undercurrent of "thud". The Barts could be "felt" at a lower volume than the EMG's. Granted, this is memory going back a few months, but it made me want to put Barts in at least one bass to get that sound. YMMV
Thanks for that. That seems interesting. I'm going to imagine the "thud" might help it lock it a little better with the kick.
I'm leaning towards the Barts. Like you said even just to have a different different palette if I need it.
Plus if it turns out I'd rather the emgs I can get a pj set pretty cheap over here.