We did a light weight glide for a customer 2 years ago and found the TSI case was lightest by a pound over a Reid. Down side is TSI cases are on back order with no estimated restock date. The results of the light weight build was 22# this was a TSI case, fabbed aluminum pan, hipster aluminum valvebody, TCS aluminum pump, and a Coan aluminum hybrid drum. Compaired to a JW set up with all steel parts and cast pan.