Definitely, and Best is ahead than Shola and Ba at the moment IMO.
Easily.
His finishing has been bad - but his link-up play with midfielders right now puts the other two to shame. He gets midfielders involved and encourages them to push up a lot more. Something we've missed in the first two games. Also got good aerial presence and will give defenders a tough time.
Minor-ish infringement, but if it's in the box - it should be a foul, and therefore a penalty. Anywhere else on the pitch, it'd be a freekick. No question.