The longevity worries me, as does the short flow length, though I fear that may be due to people changing from laminar to stream powerheads. You can't really feel the effect of propellor powerheads any real distance from the powerhead, but can see it with food.
It does seems slightly bulky, but then it is 15,000 LPH.
It is a really hard call. You don't know exactly how much it is going to cost, and it may not even last a year. On the other hand, only unhappy people complain, and if it works well it is almost certainly going to be a bargain.
Real tough call, I reckon.