Research point: easy to read (magazines)

As first magazine I choose design magazine FONT. The typography looks very nice and easily readable. There are two columns on right side, Leading  space is good to read. Overall the typography is breathing here. There is used only sans-serif font for typography and it is probably only one type of font. It looks clear and comfortable.

NATIONAL GEOGRAPHY magazine: the designer use two fonts here. It is readable but I think the main text should be same font as the headline. It is serif font and maybe here help to make the magazine more looking as popular education text some sans-serif.

All next magazine show me that when there are enough space for white around the text, and there are use few fonts (2 are enough for me, 3 are on the edge), there are few columns with a certainly numbers of word, all these attributes should/would work pretty well. All next examples I like and have feel of a balance between typography and photographs (layout).