Cheers for input guys.
Bit the bullet and got one after a quick once over in the shop. My initial thoughts:
Heavy: love it, always expected air-pistols to be light and plastic feeling!!!
Blowback: real good kick.
Magazine: very easy to load, release is very quick and easy.
CO2: in the back of pistol handle, again, very easy to change out.
Got some match pellets but not had chance yet to put it to the aim test. The few shots I have had seem to fire low but not adjusted sights or even tried properly yet. Overall, very impressed!