As noted, Anschutz is going to be the best, but if you aren't sure you want to spend that much or if money is tight, go with the CZ452. If you enjoy the competition and really feel the possible fraction of an inch differnce at 50m in mechanical accuracy is keeping you from the podium, then move up and spend the big buck.
At our local club, we had a guy show up with his deer rifle and factory ammo for a bench rest match. He made a lot of people mad. He was in the top 5 of 30+ shooters, didn't clean between shots.
Turns out, he was a competition shooter and it turns out it really was his deer rifle. He had been hunting that morning, didn't have a cleaning kit, thought it would be fun to shoot and see how he did.
Sometimes everyone buys a given brand because it is good and because it is what everyone thinks they need to buy.