Just picked up a 1989 Steinberger XM2 bass last week. I've had my eye on one for quite a few years - not because Buck plays them but because I saw Bill Wyman playing one on the Steel Wheels tour.
Received it via FedEx on Wednesday, restrung it and played it out during both Lizardz gigs this past weekend. I'm totally sold...I've been playing a 5 string for the last 7 years but this bass is phenomenal. It's fast, has great tone and pretty well stays in tune the whole night. Had to re-train my brain back to playing the 4 string but well worth it. This will now be my go-to bass for gigs and recording.