Upgrades for a SUB Ray4
So I sold some stuff and ordered myself a SUB Ray4 for Christmas. Now I know I may be getting ahead of myself but I love to tinker and would like to try either a new preamp or new pickup in the bass once it arrives. I'd like something that will get close-ish to a proper stingray (I understand that the "shimmering highs" aren't quite as prominent on the Ray4's). So...
Can you recommend either a replacement preamp, pickup, or both for around $100-$150? I have been researching and considering the following but am open to suggestions:
Duncan MM pickups and/or preamp
Bassmods preamp with stock pickup
Aguilar pre with stock pickup
Nordstrand MM pickup
Nordstrand preamp with stock pickup
Gfs or wilkinson pickup with an aftermarket preamp of some kind.
Thanks for the suggestions!