I read Flying, a couple of UK mags and a few Italian ones.
The best part of Flying are the columns. Baxter and Len Morgan were magic. Now Lane Wallace and Dick Karl fill in the space they left with stories of flying that I, as a Sunday bimbler on other side of the pond, can identify myself in. The other articles are interesting because they give a view of a very different flying world compared to Europe.
The UK and Italian mags are more near to home and often offer more pratical information for local flights.
The difference is down to the quality of writing. The USA has more pilots and therefore in proportion a wider selection of good pilot writers: European pilots aren't that many to start off with.
AE