70-200mm L (EF) vs 70-300 L (EF)

Jay Brookstone wrote:

Shot out of country last year with another pro to capture intimate details of local life. We had severe size/weight restrictions due to a need for low profile. She chose a very compact mirrorless micro 4/3 kit, I took a modest 35mm kit.

Her main complaints were viewfinder issues, responsiveness and grain. Mine were inability to use large aperture lenses due to bulk and street attention. We both compromised and we both got our shots and both of us received a lot of positive feedback regarding the resulting Images. I gained real respect for the emerging compact mirrorless systems on that trip.

Either will work.

My travel kit was a 5D Mark III, 16-35 f4 IS L, 24-105 f4 IS L, 70-300 DO IS and itty-bitty 270 EX speedlite. It all fit in a modest, drab, canvas shoulder bag. No white 100-400 on that trip.

My companion's kit fit in the equivalent of a small clutch bag. Impressive.

Jay

Fairly similar to my current kit. 5D Mark II, 16-35 F2.8 II, 24-105 F4 IS L, 100-400L (I). (Plus a Rode Stereo Video Mic and a 580 EX II).
Surprisingly... the thing I may miss the most out of my new kit... is the flash. I don't use it often... but when I do, it's been absolutely essential. The built in for any camera is well... crap... but better than nothing.

The big selling point for me honestly has been video of the GH4. Been quite impressed with the quality and the fact that I can do 100mbps 4K and 200mbps 1080 (up to 96fps). If the V-Log color profile comes along... I'll be in videographer heaven. 
If we had seen the 5D Mark IV with 4K instead of the 5Ds and 5Dsr earlier this year... I probably wouldn't have given MFT a second thought... but the need for 4K arose and it's given me time to evaluate how I travel with my equipment. Worst case scenario is I go back to the old way in the end... but... I doubt I will. Carry-on only is too liberating.

BTW - how do you like the 70-300 DO? Do you have to do much post sharpening?