I myself make use of Tapatalk when accessing the forum on my mobile. I believe it makes things a bit easier regarding mobile formatting. My preferred choice is to take part via a PC/laptop since screen size is king.
Tapatalk is supported by many forums, so I suppose if you have joined many forums then it will have more positives, in terms of switching between various forums, updates, etc.
I did however find that Tapatalk keeps my phone a bit busy, so I make sure to log out of the forum when done and close the app also.
It is easy to reply, quote, etc. using the Tapatalk app, but took me a while to figure out where to start a new post thread.