The Zeiss Ikon is the way to go if you can afford it. I have an R2a and M6TTL, thinking of selling both and getting a Zeiss Ikon and saving a little cash by basically putting both cameras together. The long baselength of from the m6, the auto priority functions of the bessa, the great viewfinder from the bessa but the 28mm framelines from the m6 (though you can see them in the zeiss ikon) and the light weight of the bessa. The downside? I dont know if the ziess ikons finder will take the knocks of a m6, the zeiss ikon's shutter dial feels like cheap plastic compared to the m6 or bessa's, also you get the same loud shutter from the bessa. All that aside, I can sell my M6 for what I bought it for, the Ikon....nope, but if you plan on using it rather then playing with it then selling it, hard to go wrong. Its something you buy with your head, rather then a Leica which you buy with your heart.