My original Stinger 64 running on 3S pack is still flyable after 3 years - It will be serviceable when the replacement fan arrives ( the original shed a blade and spit it out out the inlet recently) but the replacement fan is still available 3 yrs on and only $6 or so.
This is a bit disappointing, everything seems to be out of stock. The T45 Goshawk seems like the best bet so far. There is a long thread on RCgroups with suggestions for upgrades as well Might have a go at this one.
Alan - It may be worth looking at H.K. European Warehouse - the shipping cost should not be too bad, it will
show in the basket and if not happy just empty the basket.