I have lots of miles and experience with the Simplex Super LJ derailleurs and consider them to be among the best shifting and durable (remember these are the all metal ones) from the 70's and early 80's. I happen to like them more then Campagnolo NR which I have on a few of my bikes as well. I've never used a Huret Jubilee and am curious how they compare. Certainly they weigh less as that is what they were known for, but how are they shifting and durability wise?
Eric Elman
Somers, CT