Which brakes?

I'm getting all the bits together to build my first fixie and want to fit side pull brakes to it but i'm unsure what would be best. I have a pair of weinmann 500's that need a good service and clean up but have also seen a new pair of Saccon Altex with levers on ebay that look quite cool! I've googled both types of brakes and they seem to both be entry level models and there is more info on the Weinmanns. So are Saccon's any good? or should I just stick with a known name?

As a general rule, I'd stick with dual-pivot calipers. Shimano and Campag are all good, and Tektro can be good on a budget.

Tektro is good enough and cheap enough. Yet to have any problems with mine in about 10yrs of riding. Dual pivot is better as he ^ said.

dual pivot if you can! significantly more power over most single pivot side pulls.

check your sizing as well, i.e. brake drop.
that's the distance from the bolt to the rim.

standard reach is 42mm odd.
deep is up to 57mm.
deep drop are even further.

thanks for the replies.. The bike is built and I'm really pleased with it.. accept for the brakes, I got a bit impatient and decided to buy the Saccons as they were really cheap but they are really poor! lesson learnt there! I'm used to disc brakes on my mtb and these things are just scary.. I think i'm going to to have to upgrade to you recommendations.

One small tip - Campag brakes depend on the lever to release tension in the brake cable for wheel removal, whereas Shimano (and clones) have a lever on the brake caliper itself. That said, I'm Shimano-allergic so just rely on the give in the tyre.