I've been playing on a Vantage 725B, 4 strings bass, for several years in covers bands for fun. The bass has a slighly twisted neck (it buzz on the A string between 5th and 7th frette), but I like (and I'm used to it ) the thin neck and its round shape and the warm tone in the mic (but a bit flat though). There is an easy access to high notes (24 frettes) and awonderful neck. I've found a band (we do a mix of rock and metal, playing most of the time in drop-D) and I would like to get a proper gear to gig, but finding the right bass is a nightmare ! I have no idea what I want ! my budget is around 600£, so I can go for a Fender Jazz bass mexican deluxe (active) 4 or 5 strings, but I don't if it's the right choice quality-wise. I've tried various basses around, but I haven't found the right one yet. Judging the tone of a bass is quiet hard (amps in shop are too different to compare...). And since I can have a 4 or 5 strings for the same price, I don't know which one I should take. Any hints or advices ?