Renegade and RASE Knee/Shin pads. Both would rotate to one side, leaving my kneecap exposed. The Redz are much more secure.
Matrix (LED w/ pushbutton) with AA Messiah @ sub-200psi input. AA Armageddon 68ci 4500psi, no drop forward, set at 800psi.
Palmer Cocker same, except AA Vigilante @ 325psi input.
Lapco barrels (AS or BS depending on paint size). 12V Revies.
I started with the old Trace softball pads, then used the Renegade and the RASE versions. The Redz pads are the first pads that I've used that won't rotate around away from the front of your kneecap, leaving it exposed. I've finally found pads that work for me.
Great protection - for me, I find it stays up on my kneecap no problem, and the shin protection is superb.
The kevlar front is tough and doesn't abrade, but it's still not as hard as a rigid knee cup or shin guard so you'll (maybe) get a few more bounces than you would've with a rigid surface.
The velcro straps are really convenient as they allow me to remove pads on a hot day without having to remove my shoes.
The only negative thing I can think of is that the velcro straps are quite sharp and can cut into your skin behind your knees. If you wear these pads on the outside of your pants its no problem. Since I wear them on the inside, next to my skin, it can be (literally) a pain. The two straps behind the knee can leave sharp cuts.
I've found an easy solution - I use a Tensor knee wrap to protect myself from the straps. I'm not thrilled about having to put another layer on, but it's not really a big deal and I'd rather not have cuts.
The best knee/shin pads I've ever used. Great protection, doesn't rotate away from the kneecap, doesn't slip.
The only downside is if you wear these pads under your pants and next to your skin, the two straps behind the knee area may cut into your skin. You may need to wear a wrap around your knees to prevent being cut. One point off for this.