Picked up an M4 to go with my new Voigtlander 35/2 ASPH. I think CV has just been nailing it with their recent 'vintage' line, which are not vintage at all except maybe style. The 50/1.5, 35/2, 28/2, 21/3.5 all seem to be outclassing the admittedly aged ZM line up, and giving Leica a serious run for the money. They sell a lot of cool lenses such as the 1.2s and the APOs, but I feel like the balance is hit just about perfectly with these 'vintage' line lenses. Some character, sharp, no focus shift, affordable, and most importantly, small.
I forgot how small the M4 is, they really nailed it with this one IMHO. Can't wait to put some Ektachrome through it.