Wait for an eBay coupon, stretch your budget a bit, and get a Dice. The Taichung, Taiwan Spydercos are the arguably better made than the US and Japanese models. Many of Spyderco's most expensive and most highly regarded knives are made in Taichung. The Dice has a blade under 3 inches, it deploys very quickly with the flipper but can still be opened slowly with the blade hole, the frame lock makes it easy and fast to close, and the hardened steel lock bar face makes it even more durable. Don't let it get dull, and simply touch up the blade on a leather strop.
Now, if a back lock is fast enough and satisfying enough in opening and closing for you, then the already mentioned Chaparral is hard to beat. But it's not impossible to beat. I personally prefer the liner-less construction of the Native 5 lightweight. If you like orange handles, there is the Cutlery Shoppe exclusive Native 5 LW with S90V blade for $95.
Honestly, though, it seems like you're asking for $150+ knife specs and features for $100. If you watch their channels closely to get in early, you might be able to score a good deal on a very lightly used, higher end, Spyderco from a YouTube knife reviewer. Channels / People like The Apostle P, Birdshot IV, etc, somewhat regularly sell off some of their knives to free up funds to buy new knives for review.