I've had mine for years, no infections. I have had the problem with hose fitment at the racking cane, but if you soak the end of the hose in hot water, you can slide it up pretty far on the cane and have no leaks. The seal on mine is not as good after all these years, so I think I will retire mine and get a fresh one. I may go for a 1/2" model but I mostly use it to rack from carboy to keg so 1/2" would be of little advantage.
I have read that it's better to store the cane outside of the tube, to keep the seal from developing memory. I'll try that with my next one.
Mine usually soaks in idaphor for a while before I use it, and I pump the solution through it, and back into the tube and around the tube to circulate the santizer everywhere.