Pay attention to the visuals, as if you worked with Metatrader platforms before you'll need some time to get used to the interface.
Then if you are fond of algo trading and eager to make your own trading bots, keep in mind that MT bots and Acttrader are created in different coding languages.
Apart form that the platform is very convenient to trade on and highly functional.

Oh man, there are plenty of it. Platfrom is very handy and it feels good to trade via it. You would better try it once and you will find points that you need.