Depends what you think a perfect picture is!
A lot of folk say that 50hz is probably optimum for sport but I'm very happy with the picture I get from my Aconda.
Watched a few, recent UEFA/Chmpns Lge games (terrestrial) and hasn't been a problem. No smearing as I've seen on some other 100hz tvs. However, I might be more forgiving than you.
Best to compare in a showroom when a game is on. Arsenal v Chelsea was playing when I went to John Lewis on sat, and I was pleased to see the aconda picture looking good compared to other Tvs, notably some of the philips pixel plus screens.
that said, the picture on the 42" loewe spheros was pretty good too....