Terraflex megashort SYE opinions

How tall is your lift? Do you actually need a megashort or is a standard SYE (like I installed on my previous TJ) enough? Not to mention you'll need an electronic speedometer calibrator if you go with a megashort, they eliminate the speedometer gear.
 
Pros--longer driveshaft.
Cons--$50-140 extra expense for a speedometer calibrator
 
Not as good as the JB conversions but the couple I have installed have worked fine.
 
How tall is your lift? Do you actually need a megashort or is a standard SYE (like I installed on my previous TJ) enough? Not to mention you'll need an electronic speedometer calibrator if you go with a megashort, they eliminate the speedometer gear.
Thanks for the responses guys.
I don’t have any lift yet, I’m thinking a 2.5” lift and a tummy tuck sometime down the road. For $80 I thought I’d put it in a drawer till I need it.