It is very similar to IMR 4350.
I would say on the average that H4350 is better for me; however, with the 105 AMAX in my .243, the AA4350 was the better. The kernels are longer with the AA powder too, fyi. If money is the reason you ask, it works just fine. If I could only have one of the 4350s, it would be H4350 hands down.