I'm not familiar with the infinity. Is it a 2004 bow? I couldn't find it on the pse site.

But, if it's made by PSE I'm sure it's a good bow and would last you many years. I just retired a 10 year old pse this spring adn bought a new PSE. They are great bows and PSE will stand behind them. If it fits well and feel good to shoot, treat yourself. I'm sure you'll be happy with a PSE.