There are so many types of press fit designs, that you should look at the specific type in question. Do a search for Hambini. He has videos where he describes what he feels to be the shortcomings of some designs. I know the BB86 is considered to be OK. There also some pricey bottom brackets that screw together, but fit into a press fit frame. I've got two bikes with BB86 that are working OK. I use Campy drive trains, so all that presses into the frame are aluminum cups, that match the bearing that Campy presses onto the spindles.