50/34 vs 52/36 crankset for 11-32 cassette (shimano 105 5800FC) Following up on this enlightening answer, I would like to know the differences between 50/34(compact), 52/36(mid-compact) and 53/39 (standard).
The cassette I am choosing is 11-32 to give me a wider flavour of gears but normally I don't use the lower(bigger teeth sprocket) gears, I've just trained like this. I put more power on small slopes rather than shifting down the gears. Thus, I was also thinking to go for 11/28 but then fixed 11/32 as my cassette.

What would be the best crankset to go with it? By default, its 50/34 but I can choose.

I am buying a cross bike from ROSE (DX-2000) and would mostly use it as a road bike for long distance (>100KM). I need a configuration where I can have the smallest gear possibility, in other words, I can put in maximum power and effort (which I miss in my current racing bike with Campagnolo Xenon 9 Speed set, I don't know the exact cassette configuration but its missing the few sprockets :D)

Thanks
50/34 with and 11/32 on the rear is going to be very spinny. 
For me - the range is too wide and the gaps between the gears too big. But - this depends on the kind of riding you will be doing. If you are riding the very steepest of mountains - than the 34/32 combination might be what you are looking for.
Purely for fast road work - that's too wide a combination (for my personal taste).
The other thing you will have to consider is the rear mech. For such a wide range you will need to go with a mid or long cage rear mech. I don't think it will work with a standard short cage.
However, I have used 50/34 with 11/28 on a short cage - and that has been OK.

Try the Sheldon Brown gear calculator to work out the combination which will work for you.

http://www.sheldonbrown.com/gear-calc.html