I'm trying the Marvel thing since they had a two months for one promo and so far I'm liking it a lot. I was over a year behind on the comics I'm reading so even with the six month delay I'm still catching up. Also the back catalogue is huge so I can use this for research (not the Pete Townshend type).

My only problem is that the "12 issues" you can save to read offline are actually more like 6. If you're completely offline you can only see half of them. My tablet doesn't have 3G or anything like that so if I'm going on a long trip, I'll only have six comics to read, which isn't enough... so I'll probably end up bringing some CBRs anyway.