I own lenses in the micro 4/3, M, & Fuji X mount...my favorites from those I've had the pleasure of using: (so I'm a Voigt fan!)
1. Voigtlander Nokton 50mm 1.5 (current version, in silver) -- just a beautifully crafted object -- I pause to look at it sometimes (silly, but I can't help it) with gorgeous rendering -- unique character -- this will live on my m3 till death most likely.
2. Voigtlander Nokton 35mm 1.2 (v1 - black) -- solid as a rock (weighs as much as one too!) but lends such incredible character & mood to the shots...impeccable out of focus characteristics -- this one will likely live on my M2. (I want to try to the Nokton 1.4 for it's smaller size one day in SC)
3. Zeiss 50mm F2 Planar (black) -- just a solid lens -- near 'perfect' rendering, but still retains a welcomed signature and overall rendition -- not lifeless like some digitally 'perfect' lenses -- an 'easier' lens to shoot with being an F2 lens. Small size, good price, all around, a solid contender in the 50mm category.
4. Voigtlander Nokton 25mm (50mm FOV equivalent) F.95 for M/3 -- my favorite m4/3 lens. Obviously fast, but also a standout in the m4/3 world as nothing renders quite like it -- super sharp by F2.0 -- vintage glow at F.95 -- not a perfect lens, but those imperfections add to the character of the images it produces -- Incredible if you shoot video -- close focus to like an inch or something ridiculous -- great build...I wish I could use this lens on bigger sensor formats.
5. Voigtlander 21mm F4.0 LTM (in silver) -- a little jewel of a lens (beautifully built from brass with silver paint)-- super small, super sharp right from the widest aperture -- love the viewfinder it comes with -- so clear -- just a solid (and cheap) wide angle -- I would love a Leica 21mm, but those are so, so expense and this little guy basically puts up the same performance and build quality in a package for $400 bucks -- love it!