Agreed. I think he's got better with each game played this season.
The whole twin thing is great. Looking at how good Rafael has become means that we can be pretty damn confident that it's only a matter of time before his bro hits the same heights.
Same with Smalling I think, who I was not convinced by at all early on. He's coming on very good though. If Fabio can improve like his brother has and Evans can find the form he had last year, then our defence is sorted for the considerable future considering the ages of those 4 players (Da Silvas 20, Smalling 21, Evans 22).