Tapastic all the way for me.
I've tried using LINE Webtoons as a way to expand the fanbase for my comic Life of an Aspie, but since my comic I guess isn't done in an "in-house" style that would be appealing for that site, I'm not going to hold my breath when I give them another chance later this year once I'm done fixing the art for the older chapters of my comic (which might have been the problem before? Idk.) and with good reason.
Life of an Aspie focuses on kind of a niche subject what with the main character having Asperger's Syndrome. (or autism if you prefer). As a result, such a subject would be lost on the readers of LINE in my opinion who are used to non-complicated feel good romance stories or the silly tumblr esque looking comics that focus on "lol. look at me. I'm such a doooooooooork!" as opposed to any actual substance.
Compare that to Tapastic where yeah, mainstream comics still get the lions share of attention, but to me, the almost 140 readers I have acquired feel like they genuinely like LoaA for what it is and that always makes me feel good as a creator. Whether they like LoaA because of how the subject of Asperger's is handled or because they like the qualities my main character has, I don't think I would get that same kind of reaction over on LINE even if I did have a ton of subs (which I don't). Instead it would be more confused readers, readers making comments irrelevant to the comic, and of course, probably a few snotty readers who think they know more than I do about webcomics if the Twitter feeds of some of the comic creators I follow who use LINE are anything to go by. smh -_-