They are pretty rifles lovely walnut on some.
I had one in .177 it was a lovely looker,
apart from that silver underlever airarms have never changed! They should anodise it black inmo.
I also bought a tx200 new back in the 1990s and my opinion was the TX is (was) a nicer rifle to shoot.
I had some twang with the prosport it wasnt bad some pellets more than others but I put in a new spring and seal and it improved it a bit
also the underlever liked to jump out of its slot which was annoying but there was a way to adjust it iirc, but that orginal tx I bought didnt need any tuning it was smooth as silk to shoot and laser accurate never had any issues.
My opinion is if you want a prosport go for it in .22 if you want .177 get a TX
Would I buy a prosport new, probably not I would look for a walnut secondhand one to save a bit, that said would I buy a new tx probably not, prices have gone up quite a bit since I bought mine, but are they the nicest springers available probably.
Still had many happy hours hunting with the prosport though, admiring its looks inbetween shots.