I use the older style Peterson Tri-Fold for my "All Around Kit" and could not think of a better case for the money. The S.O. cases (and similar zipper styles) are OK at best, but there is no comparison to the Peterson Bi and Tri-Fold cases. They have a leather flap that covers the tops of the tools to prevent them from falling out and one of the best features is that there are pockets behind the main front pockets so that you can add some of your favorite tools as seen in these pics.
My Tri-Fold currently holds:
9 Peterson rubber handled picks
12 various tension wrenches
6 LAB picks
2 prong tension wrenches
1 Feather-touch tension wrench
4 disk tumbler picks
2 double sided Southord picks
1 broken key extractor
2 Peterson Bypass tools (Knife and AM100)
Peterson I-Core tension wrench set with Slender Gem pick
1 tweezer-style tension wrench
5 piece warded pick set
plastic card stock
Rytan plug spinner
This might seem like quite a lot, but the case easily fits into a back or jacket pocket. Overall, I think the Peterson folks deliver a well-though highly useable design in everything they create.

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