Best thin EDC knife under $40 that meets these criteria:

[Yar]

Leek. Here's mine, which was my EDC for about a year

 

[youknowwhatimsayin]

Kershaw termite ftw! It was one of my favorite knives until it got stolen 😢

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

[exracr]

Spyderco Crow2

 

[THEJimmyN]

The Ontario 8904 is an awesome knife for under $30 w/ a 3.5 blade length. Nice large grip like you're looking for. This, Rat I/II are phenomenal knives. Highly recommended. I use to spend like $10-$15 bucks on some generic gift shop knives and these were the first knives that really showed me what quality was. I started venturing into more pricey knives but still have my Ontarios as well.