Ray i am around Monday and Tuesday , come up and give them a try. Between you me and the fence post i think the number one difference in these lenses performance wise is there built for digital and are a little flatter by maybe 1/3 of a stop or more. It handles the highlights just a touch better and flattens them, this is a good thing. They maybe better than the Elmarit in sharpness and detail but the Elmarit maybe smoother looking. Leica did a nice job on these lenses. I personally may get a 75mm which will be a travel for the 75 Lux. I am going to get a 75mm at some point to try out but i bet a dozen donuts it performs just like the 90mm.
The 35 cron version IV depends on how you use it in that scene it is distracting i agree but if the background is closer it looks great.