Which C02 pistol should I buy, recommendations please.

[PaulR]

maybe this will help http://www.co2airguns.net/Collection/index.htm

Only considers replicas but very informative nonetheless.

As mentioned before the Crosman 600 is worthy of consideration. The finest CO2 pistol ever made imho.

I've got two amongst my other 60+ rifles and pistols. I use them all but prior to a start or at the end of a session I invariably end up loosing off 10 quick firing rounds from one of the 600s - marvellous fun. You can pick up a decent example for about £250 and they are worth every penny.