I have just bought some Kerrits and am completely hooked. The full seat microcord were my choice, only thing is they come up quite large so buy a size small.
So far the best pair I have had is a pair of Dublin ones, bought them 2nd hand from ebay, 4 years later they are as strong as ever, very comfy and very warm.
i've got some premier equine ones that i love - got them in the sale and i just wish they did a few more colours so i could get some more. about c45 in the sale i think
I've got a pair in every colour of the Pegasus breeches- exactly the same as Mark Todd ones, with the suede knees etc, they are REALLY comfy and hard wearing- for some reason I ALWAYS go through knees on mine and these haven't (touch wood!) so far done it!! I have a huge dislike to the fashionabele thick cotton joddies/breechies that everywhere seems to sell at the mo so these are great- stretchy and comfy.
Not expensive either they are VERY worth their money.
i was given a pair of georg schumacher ones that are seemingly invincible! otherwise i have a pair of mark todd which i really like and know a few people who're big fans of the derby house own brand ones- think i might have to invest