Tesch panniers are strong.
I'm not sure that Darr or Touratech would survive a bad fall, they look fairly flimsy and easy to bend. I did a lot of research on panniers a couple of years ago and finally went for Tesch. Jesse are very expensive and some people have had problems with them when having a spill. I don't think I've ever heard of Tesch panniers breaking... but maybe someone out there has?
There's also Hepco and Becker 'expedition' and they now do a great looking plastic Gobi pannier - these are available from Moto-Bins in Surfleet, Lincs if you want to have a look
Tesch are solid, and reasonably priced for what you get, I reckon they'll last for ever.
There's also metal mule panniers, made in the UK that look pretty good.
But I like the Tesch panniers - BIG, light, strong and simple - which is all you need really...
[This message has been edited by Fuzzy Duck (edited 21 December 2004).]
(I\'m quackers about bikes)