I just ordered a P3D Q5 and had the same consideration as you, which reflector to get. I ultimately went with the textured simply because in most cases, this provides a more useful beam. The smooth reflector gives more impressive throw, but my intended use for the light was not long-range spotting. Since the textured reflector smooths out the raccoon eye a little more, I went with it.
The T1 from Fenix, though, should have had a smooth reflector, IMO.