I don't particularly like the look of banked track. I'm more interested in tracks that have a more realistic appearance. Most 1:1 road courses don't have banked turns, at least to the degree that the Carrera track is banked. I suppose if one were modeling a superspeedway like Daytona or Talladega, banked track would look prototypical.
On a practical note, some cars will drag on banked turns. That being said; everyone has an opinion and often they're not the same. It's your track and you should go with what makes you happy. You've really hit the ground running with your track. It's sounds like your having a lot of fun with it and that's the goal for just about everyone here!
Brad