I do like tb3, but I usually choose my clue based on the color when dried. Tb2-dark for walnut, tb3 for browns/cherry, and tb original for pine (yellows).
Tb3 is indeed slippery, but for open time I'll make sacrifices.
Hadn't heard of the Thick and Quick, I'll have to heck it out.
When I do miters, they'll often be splined, but I'll do a regular glue up, let dry, then cut for the splines.
Always a bit apprehensive about it falling apart mid cut, but hasn't happened yet.
An up coming project frame is about 6' tall and 12" wide, that has me trying to decide on a safer approach.