Not auto or OTF, but given the advice to trend away from those, you might want to look at the ZT 0566. Like you, I carried inexpensive Kershaws for a long time and then decided I wanted something better. The 0566 has been my favorite so far. It deploys quickly with the flipper, is easily closed one handed, and the assisted opening can be removed if you desire. The Hinderer design is fantastic for EDC, and it fits easily in your budget.

I also have a CR Umnumzaan, but I'd rather carry the 0566.

Sorry to drift from your original question, just thought I'd throw that one out there for your consideration.