I haven't used that brand of cylinder, but I was a RRC propane licensee (company rep) for over 30 years as our manufacturing company installed propane systems and appliances on special purpose vehicles, and have experience with these type things in general.
I'll only offer this -- 100lb cylinders are nice in that you get an increased rate of vaporization in colder weather under heavy draw conditions. Plus, you get a longer run time, of course.
But, you've got to be in Hulk Hogan shape to throw those things around when they're full or you'll really screw up your back. I think the tare weight of the cylinder is about 80lbs and since the cylinder is filled to 80% you've got 160lbs total to deal with.
The 40lb cylinders are much more manageable for mere mortals.