My experience - it came “fully loaded” and I found it great for tv shows and films until the apps started getting closed down or not working. Then I had to look up how to put new ones on, then I got bored of constantly having to do that. For streaming sports I found it crap, often cut out mid game if I could get the game (or ppv boxing) at all. The in law who gave it me stressed it was because I had the wrong apps and to keep trying new ones. Lost patience in the end and just stuck with sky.
Summary from me, if you don’t mind spending the time updating it and searching for the good links/apps, and it’s a monetary decision also, go for it.
I should say my brother has a proper box (not sure what it is or where it’s from) and that works faultlessly like a sky box. He gets it all… sky sports, bt, porn, ppv, ifollow etc. and never had to update anything. If I was gonna go pirate I’d get one of those over the fire stick.