As for the Q-Tuners, cool design, but judging from their soundclips you'd have a much harsher tone than the Villex pickups. Villex will still give you the highs and lows you crave, but with a warmth and a growl and a versatility you can't find in other passive pickups.
You guys have me convinced

I'll definitely contact Villex when I'm ready to order the pickups. I'm still trying to complete my pedalboard (two pedals and a good set of patch cables to go, should be done within the month), and I still have to pay for my new bass's construction, so this month is going to be tight.
Next month, tho, first thing, I'll be sending mr. Villex an email. Maybe even earlier, who knows, depends on how things go, money-wise, this month.
Thanks for all the suggestions this far, guys... Still one thing left to decide, tho:
The bass already has 5 knob holes (vol, vol, tone/pushpull circuit activation, bass, treble). What do you guys suggest I use to fill up that space? I understand Villex includes some sort of mid-switch, so that'd be one hole filled. What's the usual configuration for the other Villex pots?
.. otherwise, should I go and add a preamp instead? btw, I'm kind of a knob-tweaker, always changing things around from song to song.
It's probably still a couple months till all pieces are in place, but I already can't wait to find out what this project is going to sound like
