I would guestimate I service & repair more variation in target pistols than most. FWB, Steyr, Hammerli,BRNO,Walther Benelli Diana,Morini etc etc etc.
From a reliability point of view & build quality the P34 is no worse than the Steyr & it's incorrect FWB had got a bad name because of the P34.
It is true however they allegedly stopped manufacturing the rapid fire pcp pistol for a time due to reliability issues & some of the P/cp55's can be very expensive to repair should they stop cycling.
I repair & service quite a few Steyrs over a year usually parallel imports or guns the importer won't service or sell spares for. They are excellent pistols, all of them I have a LP5 myself to play cowboys & indians with.
I also have a FWB c20 again excellent build quality & reliability, I also have an Original.
From my point of view the juries out on the Walther LP400 as I have had a few leaking from the firing valve, more than I would have expected, the seal looks a bit feeble to me, just my observation & not a criticism.
I can't give any handling advice or say how each pistol shoots I'm not a pistol shooter.
What I can say is accuracy is a moot point, they are all consistent & accurate when they are working properly & serviced correctly, some have dimensions, balance, triggers etc more suited to one person than another.
Spares are more readily available for some than others but generally not a problem.
If I was to give any advice on purchasing a pistol it would be try them all if you can & don't get one with a electronic trigger, it's been tried by many over the years & dropped by most but again the Morini seems okay, the odd board has to be replaced now & again. the FWB 90 sometimes had/has the same problem or stops operating because the solonoid needs cleaning