I can seriously admit my best braking experience comes from Universal centerpulls made at the end of the 60es, early 70es. I coupled them with Kool-Stop MTB salmon pads... they look queer but I love it in the end.
This summer I also enjoyed going faster than roadies on $3000 setups, with a centerpull on the rear... my centerpull ride is RIPing tho... and I can't wait to find a suitable frame to use my mafac gold (front) and universal (rear)
They're also just so easy to set up.
Why did they all stop making them ? weight ? ZEUS claimed 150g per caliper on their 2000 centerpull model. Real weight needs to be verified, but that puts them in the range of very light brakes. And a Dura-Ace model : a mere 135g w/o the pads but all the other hardware incl.....
I wish Campagnolo had tried to make a model too.
Feel free to post lesser known models.
I'd like to stumble upon a Zeus 2000 model someday !! they look the most bad ass after the universals and the ballilas IMHO
CLB course 2 also look interesting