-Difference between volatility in providers

Everyone seems to try to make the most volatile slots these days. So max win’s are really really hard to get. Pragmatic slots generally have 5-15k max win’s which are reasonable. Netent slots don’t have too high max win’s so i usually tend to play them. I also like evolution games live games, but that is another story ..

-Do you check the possible max wins when it comes to slots? 

Yes i always do that.

-Is it a problem that a game does not have a bonus buy feature (All Play N Go games)?

No, not really i hardly use bonus buys anyways.