RTGS

I might be teaching my grandmother to suck eggs but no one seems to have mentioned. . . When trying different pellets its best to clean your barrel after each type you try and then put 30+ pellets minimum through of the next type before deciding how they compare. Some folk would say don't clean - but you'd still need 30+ of each pellet. If you swap pellets willy-nilly, a few of these and then a few of those etc then they'll fly all over the place and you won't end up making a fair comparison. hope this helps.

I looked at the same 2 a while back. A lot of folk seem to think that the HW97K is best if tuned. The Prosport is supposedly fine 'straight out of the box'. I went for the prosport in .22 and have no regrets. Its a great looking gun as and as accurate as my AA S410K (albeit harder to shoot accurately). Hope this helps.