I have a Feg , FWB modell 2 ,and a Walther CP2

All good. I prefer the FWB for balance and low sight line.

The Feg uses capsules ,the other two are bulk fill which is fine when you have learnt how to do it
Actually as easy as a pcp fill and the extinguishers are cheap and last a long time.

All three of mine were £250 each which I think is good value.