As far as using my Main Axe system is concerned, I didn't look at any single lens in a vacuum. Since I had a given number of lenses in mind (3), one major concern was a consistent optical signature between the three, rather than choosing one lens for one particular attribute, a second lens for a different attribute, etc. Therefore, I see all three lenses as a set.
Cost, of course, figures in the mix, but it is a mix, which includes general optical performance, build quality, size and weight. Timing was an X factor here as well: just as I was getting set to exit the SLR world, I took another close look at the Hexar RF, and recalled to the great time I had with my Hex AF, and, doing the math, realized i could put together a great two-body, three-lens system for about the same price as a certain other, recently-released AE RF and one used lens. Cost figures into this (again), but there was also a matter of the bang-for-the-buck reputation Konica has long had versus Leica's pedigree. I suspect a lot of us here have an X factor, based on wants/needs versus practical matters.
(Of course, the Leica M2, with its 35 f/2 Summi, doesn't exactly fit into this formula, as it arrived largely by chance, but I wouldn't kick it out of my camera bag, if you get my drift.) 🙂
- Barrett