I wear Wranglers - Q-Babys are my favourite, especially Dark Dynasty (These seem so much nicer than the other colours/fits, not sure why!). Just got a pair of the new Booty Up jeans from Wrangler that I also like. I have about 5 or 6 pairs of Wranglers, I wear them at work everyday as well as riding. I wear through the knees of them first.
Today I bought a pair of RM Williams Legend jeans - I don't normally look at these as they are $$$ but I got a seconds pair for $65 down from $169. I'm loving them so far, they feel really good quality and like they will last, and the fit is a little better on me than wrangler. I have a big butt so to fit my butt the legs can get too loose, if they fit my legs the waist is too tight. These aren't too bad.