Hi Dave,
I have owned a number. of R lenses and bodies over the years. I currently have two R6s, my favorite, and an SL2. The lenses are superb. I prefer the Mandler era look, sharp enough with a volumetric quality, and of course, "the glow." I currently have the latest 19 (which I much prefer to the first version or the 21) , the latest 28 (stunning!), 35 f2 (the only Leica 35 M or R that impresses me, the 50 f1.4 E55 (wow!). the 60 Macro ( wow again!), the 80 f1.4 (i love the look), the 90 f2 (which I prefer to the 100 f 2.8 Apo), the 135 f2.8 (love the look), the 180 f3.4 Apo (this may be one of the best lenses ever and I prefer it to the f2.8 Apo although it does. not focus as close), and the Apo 2x. In my estimation this is my ideal SLR kit.