Absolutely stay with the Duncan pickups, and get the Aguilar. However, the OP3 is a better direct comparison, as it is 3 band boost cut like the NTMB. I HATE the NTMB, especially when paired with bartolini humbuckers like I used to have in my modulus. I also used to have the NTMB in my Lakland deluxe USA with Bart pickups, and thought that was way too polite. I enjoy lakland basses MUCH more with the Hanson pickups and pre. I personally find it sterile and uninspiring, especially on that bass. I think in generally, the OP3 will be more aggressive sounding, meaning more highs, and high mids. As will the Duncans. YMMV of course, and it will be different from bass to bass, but there is no good or bad, just what you want. I like aggressive, more raw, and in your face tones, and I think Duncan's with the Aguilar would deliver that. IMHO, Barts are smoother, more polite, more tame in the high mids, think Tobias-they are killer in Tobias basses. Anyway, give the Aguilar a shot. Or you really want the OP1, get the Sadowsky pre that it is trying to emulate. I KNOW that is killer!