I had the Tri-Axe in my t5, it was nice. It seemed to throw the shifter into 3rd which was really nice at the drag slip- I have a rather large stack of time slips and it felt really consistant at the track.
I ended up replacing my stage 1 centerforce clutch and stock flywheel for a afm super king cobra clutch and afm aluminum flywheel. things went well until I made the third pass then my t5 blew up.
I now have a t56 from D&D with that clutch and flywheel combo. For a while I used the stock shifter that came with it but it felt like I was on some river rowing through the gears, Im tellin ya those shifts were real long.
Since I couldnt use the tri-axe I did a lot of shopping around and ended up with the MGW shifter and Gripper shifter ball. At first it was tight, sometimes tough to get into gear but after a few weeks it broke in and now I couldnt be happier. The adjustability is what drew me to buying it, you can angle it anyway you want it and make quick changes on the fly with the supplied allen wrench.
I can tell you one thing, if you go with the MGW shifter- you wont get that buyers remorse feeling after its initial break in.
pm me if you have any questions, good luck making your choice
-fawcett