The TT one makes the gears ''Closer'' together (width)
And the B&M makes its studdy and shorter(lenght)
I got a TT shifter and an ebay knock off b&m, its super close now.
Bit of pain as the exhaust is in the way to get at it from underneath. The shortshift im sure is the same for the golfs a3's etc on ebay, but dont quote me on that, mines been on for about 2 years now.