It's also interesting to see how the perception doesn't always match the +/- number. For example, most fans seem to think Vogt started the season poorly and has improved recently. But over the first 4 games of the season (Lipscomb, Xavier, Furman and Tennessee) Vogt averaged +6 with 3 positive +/- games (+9, +17 and +5), but since then (next 8) he has averaged -4 with only 2 positive +\- games (+1 and +4).
MAW has been questioned by many (including myself) because he doesn't score a ton. But he has only four negative +/- games on the season.
Davenport is perceived as one of our better players (and at an average of -0.58 he's still a bit above average), but has a negative +/-. His is easier to explain though as it's mostly a product of a couple really bad games: -22 @Georgia and -11 @Tennessee.
I suppose that's why it comes do to the eternal question of stats vs eye-test.