I've got:
- Large Ritter Grip
- Mini Ritter Grip
- 710 in D2
and my very first knife ever was a blue mini regular Grip, which I hid somewhere outside an airport thinking I'd be able to retrieve it 2 wks later when I returned (foolish of me to have forgotten that I had it with me! but that's how amazingly comfortable it felt in-pocket). Of course it had disappeared on my return.
Anyway, the mini Grip had felt the perfect size, I edc'ed it for about 6 months. Then I was able to get a full-size Ritter, and though it took a bit of time to get used to, I've been EDC'ing that for a year now, and I love how the scales fill my hand (as compared to the 710 which I recently acquired; I love the look of it, but at least for now I miss the way the Grip contour fits a closed hand). The blade shape is also incomparable, and the S30V holds an edge very, very well.
Though you only get 1/2" longer, in terms of blade thickness and width you get substantially more, as you do in overall mass/volume (the whole length increase must be squared to get volume/mass/material increase thing); before I bought and used the knives I thought .5" was nothing, but the larger grip is a substantially beefier knife, which means for me one that I'm more willing to rely on day-to-day as well as in emergency situations.
I wouldn't mind picking up another large Ritter grip for a spare, and an M2 but those are rare and so expensive.