I like the Griptilian. I like the way it feels, and the handle to blade ratio.
Spyderfans will point out that the handles are G10, and that the Griptilian scales feel "plasticky"... I've never thought that, and they'll never point out the Spydie FRN handles as "plasticky". Oh well.
I like the Axis lock, others like the compression lock on the Para.
You can get a Griptilian model with a spyder-hole if that's your opening preference.
Both knives sell like hotcakes, have their proponents and detractors. I'd say buy both, and if you can't afford both, handle both before buying.