For everyone who said "Why do you need a backup..?"...
[quote name='nottswarwick' post='134741' date='Feb 5 2008, 11:50 PM']my view....if you are doing semi-pro or pro gigs, you need a spare instrument on stage, without question. Possibly rare, but strings do break, batteries do die suddenly, electronics do fail...rare I know, but if this happens and you are being paid you need to be able to pick up your spare immediately and carry on. If you have to cut short someones wedding gig, you are really not going to be popular.[/quote][i]...this[/i] is why.
If I take a backup to a gig, it's a 5... but that's just because I happen to have two 5s Before I got the Shuke, my backup was a 4 with a D-tuner.