I am a Pocketmag user, and have been so for about 10 years. I started when I lived in the middle east (Qatar, not Delaware) where magazines were hard to find, not to mention having to lug them home.
I have been generally pleased, except for a few download glitchs when I switched to Windows 10. I like digital content although there isn't a way to search through the content for specific subject. Having back issues available on my hard drive is handy and no internet connection is necessary yo pull up old issues. Zooming photos is handy and clipping photos and pasting them into Word documents is an easy way to keep particular subject photos.
I currently subscribe to four model magazines through Pocketmags and FSM on Zinio. I prefer Pocketmags viewer intrface to Zinio.