What about these? they are what I run on my winter bike with full length mudguards. Not fantastic but cheap. Edit: hardly DA9000 level but fine for a winter bike.http://www.wiggle.co.uk/miche-performan ... liper-set/
poor quality, tend to rust, their pads are killer for the rims. I'd avoid them, as they're expensive (if you buy a decent compound pad, which is a must for those brakes.)
Essentially they're the same as tektro R510, believe it or not, they even have R510 stamped on the inside of the arms..
I'd go for some Campy caliper (50mm max drop instead of shimano's 49mm) sometimes just that 1mm is all you need. Or opt for Shimano Long drop calipers, or some more decent (7series) tektro..
Choice is up to you, but I'd strongly advise you to stay away from miche performance if you don't want to re-lace the rims in a few months : )