I got the Umarex A1 Government pellet firer in the end and I'm very happy with it. The blowback models are fun to shoot but I am currently wresting with which calibre powder burner to get (.22lr cheap to run, 9mm faster with reasonable ammo costs, .45 acp cos its short, fat and slow, just like me) so the recoil isn't as important in the co2 one.