The Vitomatic II is about 1/3 smaller than the CLR and app. 100 gr. heavier. The II has more shutter times 1- 1/300 vs. 1/15-500 on the CLR. Otherwise they are rather identical. IIa is about the same size as the II but has the meter needle visible in the viewfinder, so you don't have to remove the camera from eye level to adjust shutter or aperture. I have both the CLR and the Vitomatic II - somehow the II feels better build - but it might just be pure psychology, due to the smaller size and larger weight?
The Color-Skopar delivers really sharp pics except on full aperture (2.8) with a nice neutral color rendition. My first Voigtländer was a Vitomatic IIa - I have had that for more than 30 years and for several years it was my carry-everywhere camera. I took it out of the cupboard last week - after more than 10 years of inactivity - and shot a birthday party for one of my friends in B/W. Risky you might say, but the Vitos usually just keeps on ticking when kept dry at normal room temperature. Pics were really nice, no problems at all.
I have about 15 different Voigtländer rangefinders in my collection - all gifts or bought for peanuts at flea markets or thrifts stores. I have had many through my hand and have only ever come across 1 or 2 that had stuck shutters and needed a CLA. The meters are not always working though, but that is another matter.
