This should be a spirited discussion!
Everyone has an opinion on what makes XX system better than YY system - just like why one likes a pilsner or a stout. I agree with Guy in that you have to look at what you shoot, how you shoot and what your budget is. MF digital is 1 fps capture not the 10 fps of the Canon. In the end, MF is a different animal for specific results. It is not the stealthy street rig nor the Ferrari fast sports kit, but it will give you the best image quality out there no matter what brand you finally purchase.
There is a large photo show coming to NYC in October, PDN Photo Expo, http://www.photoplusexpo.com/
where you could see and try all of the gear that you are thinking about and ask questions to your hearts content. Registration is free to the show well worth the trip from Finland to be able to handle all of the gear under one roof.