I prefer that they have belt loops which the Dye's don't.
I think the knee material is more slippery than the Dye and they do seem better quality in the stiching etc.
They don't feel quite as heavy (although Redz are still the lightest I've used by far) and the pot thing is a good idea, although it's not like you haven't got a battlepack and I wouldn't use them unless I was playing back as the pots add too much hard target area.
I don't like the position of the piping down the front of the leg, it sits right over your kneecap so if you kneel on hard ground it can be kinda uncomfortable.
Otherwise pretty similar really, I'm not 100% sure teh extra expense would be worth it from a value POV though.
Although having said that I only had the Dye's from last year, I haven't used this years (or next) versions. I like the look of next years, with the intergral knee padding, good idea.