I had a subscription for the first 16 issues (and they are on #17 now).
I let it lapse because half the articles are 4E and half Pathfinder.
Since I was essentially paying for half a magazine, it wasn't quite worth it for me (I have a lot of interest in Pathfinder, but no interest in 4E). Obviously Jor-El feels differently, so you now have both sides of the issue.
If you are OK with mining the 4E/neutral stuff for ideas/inspiration, then it would be worth it. If you get annoyed anytime you see 4e content in something you paid for, then maybe not so much.
The writing quality is certainly good.