Having read the numerous,varied reviews of the RB-414 I ordered one, fully expecting to have to give it a full set up to get it playable, which I was happy to do (and have the tools and experience), as I really like the look. For a instrument in the sub £200 range, you should really expect to have to tweak it a little to get it exactly to your taste.
It was delivered remarkably quickly,well packaged and in perfect condition, no sharp or unlevel frets, truss rod, intonation, action all set up beautifully. I have played this for about a week now ,to allow for climate/humidity changes, with no adjustments necessary.
My main amp is an Ampeg head and 2x10 cab and with just a variation of the gain and tone you can get a very acceptable comparison to the 'Lemmy' or 'Chis Squire' sound,or whatever sound you want. Plug it through an amp modeller and you would barely notice a difference to the real thing.
As others have said the bridge pickup is pretty good (you can get a nice growl out of it), the neck is not so good,but still ok. It has also been mentioned that on the middle pickup switch setting, if you turn either pickup volume setting all the way down it turns both off. You are, however, still able to back either pickup off in order to get the mix you want. If you want to back either pickup off completely just flick the switch! It can be rectified by rewiring...but I won't be bothering.
The only thing I probably will change is the nut, it deserves better than the plastic nut it comes with.
It appears that I struck lucky with mine as I've had no problems with it, the setup was very good straight out of the box and the overall finish is faultless...I'm really enjoying playing the 'Harleybacker' and will be happy to gig it as well.