I've had tights from Snag Tights for 2 years now and I can't fault them.
I have 80 denier, 50 denier, sheer and chub rub shorts and they are ace.
They get washed and worn, washed and worn over and over again and the colour doesn't fade.
In winter they keep my legs warm and in the summer the shorts are amazing (not sure how they keep me cool but they do!) and in autumn and spring the I use whatever option our changeable weather dictates.
I've spent a lot more on tights and shorts that just didn't fit or wear as well as these do.
My only issue is that I haven't got all the options I would like just yet.......but I will :-)
Buy some - they're fab!