After using an MT75 gearbox for the 7 yrs mine has been turbo'd and killing the box 3 times in the last 2 years with 345bhp and 390lbft torque I have decided that a T5 is the easiest route for me. I have managed to source the right bellhousing so should be a straight forward swap.
Did look at bmw boxes and other possibilities but the R&D and getting it right wouldn't have suited me due to time etc. Also getting the right ratios makes all the difference