What I would really like to see is a comparison of the last 5 picks in round 1 vs. the first 5 picks in round 2. I have a feeling the second rounders have more success.
Here's the last five years:
2007
26 Aaron Brooks 31 Carl Landry
27 Arron Afflalo 32 Gabe Pruitt
28 Tiago Splitter 33 Marcus Williams
29 Alando Tucker 34 Nick Fazekas
30 Petteri Koponen 35 Glen Davis
2006
26 Jordan Farmar 31 James White
27 Sergio Rodriguez 32 Steve Novak
28 Maurice Ager 33 Solomon Jones
29 Mardy Collins 34 Paul Davis
30 Joel Freeland 35 P.J. Tucker
2005 (Turiaf, Ellis, Louis Williams, Gomes and Amir Johnson were all drafted later in the 2nd round)
26 Jason Maxiell 31 Salim Stoudamire
27 Linas Kleiza 32 Daniel Ewing
28 Ian Mahinmi 33 Brandon Bass
29 Wayne Simien 34 C.J. Miles
30 David Lee 35 Ricky Sanchez
2004
25 Tony Allen 30 Anderson Varejao
26 Kevin Martin 31 Jackson Vroman
27 Sasha Vujacic 32 Peter John Ramos
28 Beno Udrih 33 Lionel Chalmers
29 David Harrison 34 Donta Smith
2003
25 Carlos Delfino 30 Maciej Lampe
26 Ndudi Ebi 31 Jason Kapono
27 Kendrick Perkins 32 Luke Walton
28 Leandrinho Barbosa 33 Jerome Beasly
29 Josh Howard 34 Sofoklis Schortsanitis
My completely subjective starter quality/productive bench players count:
1st round - 11 (7 starter quality) 2nd round - 6 (2 starter quality)
It's only five years and doesn't say much but the last five in the 1st rounders have had more success. Here's a breakdown of productive players and their previous playing experience.
1st round 2nd round
HS - 1 HS - 0 (Ellis and Williams picked later on)
NCAA - 8 NCAA - 5
Int - 2 Int - 1