I personally like Tapatalk
Its a little weird at first when it comes to managing the website but after I started playing with it, I liked it! Whats bad is that you cant see BBCode effects and if your forum has a shoutbox then you cant see that either. For me at least, the notifications were very quick and everything was easy to manage.
Your average writer about
Tapatalk - 200,000+ Forums, v6.2.1