OK, take a deep breath. This sentence fragment doesn't imply Monta is the best player drafted in 2005. What it implies is that as the 40th overall pick, Monta represents the best move, luck notwithstanding, of any nba organization that draft day. What am i basing this statement on? Let's take a look at his player efficiency, the de facto means of rating a player's overall impact on the game.
As of today (prior to tonights matchup against a Bosh-less Toronto), Monslay's EFF is a butterscotch, maraschino cherry diamond +19.74. Guess who's got him beat from that draft class? Exactly THREE players! Whom, you ask? #10 pick Andrew Bynum (leading by a paltry 2.12), #4 Chris Paul (currently ranked 4th in EFF at 27.5), and #3 Deron Williams (at 22.31). Not bad for a skinny "6'3" kid straight out of high school.
Of course, player efficiency isn't necessarily the golden ratio of player assessment, but I'll leave further analysis to the more mathematically inclined.
(authors note: Monslay? that's the best nickname i've heard yet. we need to seriously put some time into this!)