Im going to agree with Glong, the birdie is a good disc and works well for upsets a lot in part that its slow and you can put some arm on it without it going to far. And I'm going to second the aviar p&a, Ive had one in the bag forever and its my under stable driving putter and go to for upsets. I recently put a brand new one in the bag and off the tee it is just buttery straight and for putting it is really straight with a little bit of fade. I would suggest the avair p&a