Flying Magazine
I still subscribe, and I guess I have to put in a word.
Any of the magazines have a lot about airplanes that I will never fly, but I can't say I don't like those airplanes. I knew a guy who said there is no such thing as bad wine or a bad woman or a bad airplane (he did say a woman could be misguided).
"Flying" has Richard Collins, who I think I have learned some things from and who I can't think too bad of, since he flew IFR in the "day" in a Piper Pacer, just like me.
"Flying" also has Lane Wallace who follows in the path of the amazing Gordon Baxter. I think she does as well as anyone could, writing about the magic of flying, and she has specifically addressed RV flying.
The balance makes it worth it to me.