Well, the title just about covers it, I bought the Audi TT shift lever for the MQ350 tranny (well, I assume so, that is what is stamped on both levers).
Install was painless, undo the 13mm bolt on top, unclip the cables (no tools needed), yank the old lever off, reverse the procedure with new lever. I also grease the lever where it contacts the nylon/plastic guide piece.
Difference is not huge, shift feel has gone from "quite nice, but slightly too long" to "just right for me".
Total cost was £16.50, with a 2 week wait to get the part from Germany.
David.