predator 314/z shaft and mc dermott i-series shaft

hi guys,
do you have any opinions regarding with 314/z shaft and mc dermott i-series shaft? please share with us.

[DZ314]

I like my 314 shaft. I think that the Z shaft is probably a good one, but I have never tried it. Same thing goes for the McDermott I shafts.

[LWW]

They do have a 3 shaft system which may be an edge, but at a large cost.

LWW