The last version of the Mafac/Spidel LS sidepull.

Works great, stiff with more than adequate braking power, easy to adjust, always stays centered and beautifully finished.
I have them on my two 80's French bikes presently and have an NOS full set in my stash ready to use on whatever next French 80's C&V bike I might get in the future. Only thing bad about them is the difficulty in finding OEM replacement brake hoods. Last NOS pair I saw for sale at ebay was something like 4 years ago and I have not seen any since....Unobtainium....
Also loved the smooth, light but positive action of Suntour Superbe sidepulls. I still remember back in the 80's when I could not resist always squeezing the brake levers on bikes in bike shops that had them.They just felt top notch quality!