In our book we insist on using E6000 glue. This product has been stopped and replaced by the E6000+. The reason for the change is a legal (safety-based) one: there are components and odours that may be hazardous to our health in the old mix. (You can find some in Ebay still - go grab it while it lasts.)
Unfortunately, the E6000+ does not work for our application. I have used it for a low post repair and for a glued battery assembly and it does not hold for too long. In the low post repair, it is enough to impede proper working. The glued batttery assembly did not allow for very tight screwing. The material is too flexible and not adhesive enough for the material we are using. Even if I am too repetitive: E6000+ DOES NOT WORK WELL FOR OUR APPLICATIONS!!
We have heard a lot of good things about the epoxy 2-component glues, and we re testing, but the challenge with these is that you need to do a previous preparation of the glue, by mixing both components and applying the paste onto the parts. I have run some tests this holidays and I am waiting for the glue to cure to make some strenght tests. I will report once I have tested the samples thoroughy. Again, it is a pain compared with the plain E6000 !