The 30 is an exceptional lens. It has become my every day carry. The 50 is an excellent lens and was on my 100S until I bought the 30. The 80 is also a wonderful lens for portraiture but the slightly longer 110 is in a class of it's own. The 100-200 is made with some kind of pixie dust. It can be hand-held at 1/25 of a second and fully extended. Rock solid pictures with my aging body.