Never used any Dye pads but I've got 2 pairs of Eclipse Knee Pads and they're great. I've got quite big legs and the Large fit fine. Plenty of stretch in them without it being unconfortable.
As for the Eclipse Elbow Pads, I've got a pair but I only keep them for spare/loaners. I really can't get on with them. I like pads to feel secure and the Eclipse ones don't have any straps on them to hold them down, just elastic around the bicep so they never really stay in place. Also if I'm being honest the padding doesn't feel like it's up to much. I wouldn't feel confident taking a hard fall/slide on them. Personally I prefere Empire Elbow Pads. Velcro straps around the wrist and biceps to keep them in place and really nice padding. Mine have been beaten to **** for 2+ years, haven't fallen apart and still feel great.