@wtrskior…I guess I've done the opposite as you.
I've used Masterline K-Palm curves for the last couple years…size Large. Probably been through 3-4 pairs of them and after the initial break in period of 1 or 2 sets loved them. They had awesome grip, the kevlar didn't wear away too soon, and the stitching was durable. Then they switched to the current model which is black/green, and I've moved on to 41 Tails. The black/green fit awesome and felt amazing at first, but the durability for me has been crap. I think within the first month of wear they starting tearing apart in multiple locations.
Since I couldn't find anymore of the older K-Palms, I tried a pair of 41 Tails (yellow ones). I did have to size down to a medium, but I must say, I'm impressed with the gloves. I'm on my 2nd pair, and I really don't have anything bad to say about them.