I have 11 CV lenses sitting on my desk at the moment... 2- 28's, 2 - 35's, 4 - 50's, 1 -75, and 2-90's, and the 50/1.1 and 75/1.8 have been lent to a friend for a week.
CV lenses represent great value and usability. The M-mount offerings are just plain hard to beat for everyday use. Yes, Leica and Zeiss are better lenses and should be and if you can afford or have a need for higher quality lenses, by all means buy them. CV has been able to provide an extensive range of working lenses at good prices which has benefited all players in the rangefinder market.
The real jewels are the LTM lens, the build quality of the 28/3.5 and 50/2.5 is just superb. The 12/5.6 and 15/4.5 are ridiculously cheap for super-wide angles and deliver amazing results. The 50/3.5 and 50/2 Heliars are simply in a league of their own in every way. The compactness of the 21/4, 25/4, 35/2.5 is amazing, these are definitely pocket lenses. The 50/1.5 is modern, sharp aspherical that can rub shoulders with the best, and the 75/2.5 and 90/3.5 are pure portrait gold.
The LTM lenses just beg you to forget all about the gimmicks and just take pictures... not the fastest, sharpest, glowful, bokehful, smoothest, closest focusing lenses in the world, but rather just practical and solid picture-taking goodness.
Yeah... I kinda like CV lenses!