The Latex tubes were less fussy to install than I feared they would be. now with several hundred miles on them they feel inspired. The ride is more comfortable than t was with the butyl tubes, I adjust the air pressure before each ride....a very good purchase.
The studies say 2-5 watts per wheel, so I guess I gotta have em for my TT bike! Plus, these have a durable stem with the perfect length to fit my disk wheel.
Faster, lighter, easy to repair, and with shorter valve stems than the competition. All good.