Did you actually have one blow up? Apart from that did you have problems with the fittings getting leaky after a while? I can imagine that the plastic expands/contracts quite a bit as the water heats up and cools down at night which might play hell with the fittings over time.
If the temps get too high the ABS fittings just pop off. I went with Mission bands afterwards and they would end up distorting the pipe and leak. Mind you, I spend a lot of time in Mojave and Death Valley area, where it does get a bit warm.
Also, lived in MT where you had to drain it and take it off all the time.
I felt it wasn't worth it just to have a shower, until the Roadshower came out. The sun works really well with it.