I have an old pse and been wanting a Mathews , everyone (Mathews owners ) say my groups will improve. Is Mathews that much better then everyone else?
Most likely it's your form and I know a bunch of brothers that shoot PSE. You have to get set up with what works best for you. I decided between the omen and MR5 and although it was unpopular out here to have a Mathews bow, I couldn't be happier. They (mfg.) all make shootable bows. Mathews is a fine choice. Better groups? ... that is completely up to you.
Which makes better groups is how well you shoot a bow. Some bows you can really connect with and you will be very confident with it. You would have to shoot a bunch of bows to get the feel for them.