I've bought a cheap Harley Benton 6er a few years ago. All was good until I noticed I only use the low B/high C on a couple of songs, so I said my next bass will definitely be a 4-string. Then I bought a Standard MIM Fender which I absolutely love (looks awesome and plays great!), but once in a while I feel like jamming on an extended range. The problem is my 6er feels like it's just not making me pick it up and play it like my Fender does. Not because of the price or the brand, but there are a few issues which affect my playing: - it is a HUGE battery consumer! I buy a brand-new 9V battery, and in 1 week of moderate practicing (no gigs or intensive use) it is empty! I do not leave it plugged, and other people complained about this as well. - since the batteries die so fast, I mostly play it on passive, which means only volume knob = not a really impressive tone. The tone on active is slightly better (I can use the onboard bass and treble knobs). - the knobs have a ridiculously small sweep! Even the pickup blend knob is barely doing anything. Switching to neck pickup gives a volume boost, but no tone difference, no matter how much I turn it. - I think the neck needs adjustment - playing high on the fretboard gives a thin sound and a very low-volume buzz (it's different than the fret buzz, can't really explain it unless you play the bass). Does fixing these problems cost a lot? I'd rather fix the bass I already have than buy a new one, but if the cost of repairs is too big, I might as well save myself the effort and get an ESP or Ibanez.