i have the oem ssk. i paid around 300 for parts from tischer and 100 for install at a indy shop. I then sold the knob and boot for ~100 since I didnt like it.
The oem ssk feel exactly the same as the stock shifter only shorter throws. so if its notchy before then it will be notchy after. I have no such issues and its one of the best mods ive done. even the techs always comment on how they like my ssk when servicing my car.