Considering what we're paying for this stuff in comparison to a carton of cigs I have no complaint at all if they fail after 6 months. I won't name names but some brands are performing better long term than others. YMMV.
Just ordered a SS Vamo for $30...certainly not expecting it to be the "end all" but the price suited me.
That's disposable at that price- that's great. I'd sure rather get one of those every several months than a provari at 5-7 times the cost and have to worry because I'm carrying around $200 worth of equipment.