Thanks for the replies (and offer to T&F me).

I had a 700 I bought on clearance several years ago, but the funky design didn't work for me.

I'm thinking about adding one for "neighborhood walks" but have read they're typically very heavy / bulky. I recently acquired a nice gentlemen's folder through the extreme generosity of a friend and it caused me to rethink my cheap Spyderco folders (Delica4 and Endura4).

ZT seems to be in that sweet spot between "cheap" and "overly expensive".

On paper I like: 301, 350, 550, 561.

Andy said he likes the 350 (most cost effective on my list). Rich likes the 770 which I hadn't researched. I'll have to look into that model.