I've driven a Hurst and I preferred the sloppy stock shifter by far. My car currently has a Barton short throw with the flat stick and ball, and I couldn't be much happier. Even though it's a little pricey, it's rock solid and quite possibly the best modification I've done to my GT. I've heard the FRPP and Steeda are sort of mid range and are still a little notched up. MGW and Barton are the top contenders for the 3650, and my Barton was the difference in night and day.
If you're notchy and have never changed the fluid, you may want to look into doing that as well. I went with 3.2 quarts of Pennzoil Synchromesh (about $30) and my shifts were immediately smoother and got better for ~200 miles. At 66,000 miles, it's just as smooth as it was when I changed the fluid nearly 8,000 miles ago. Be sure to check your fluid for any metal shavings or abnormalities when you drain it, as that may sign that your notchy shifting is due to something other than the shifter or fluid, such as the synchros.