With Trey Burke out for 6ish weeks, there seems to be a strongly divided opinion on the backup PG position. Just for kicks, let's say Burke really is going to be back in 6 weeks (misses the first 10-12 games of the season), who do you want as your backup/fill-in starter? Let's say they are all available as free agents for the veteran's minimum.
Here's some per 36 min numbers from last year to help:
Jimmer Age 23 42% FG, 42% 3Pt FG, 86% FT, 3.4 AST, 2.5 TOV, 18.4 PPG, 14.6 PER, ORtg 106, DRtg 115 WS/48 .052
JL3 Age 30 39% FG, 38% 3pt FG, 72% FT, 4.6 AST, 1.1 TOV, 14.5 PPG, 12.8 PER, ORtg 104, DRtg 111, WS/48 .061
Tinsley Age 34 37% FG, 31% 3pt FG, 69% FT, 8.6 AST, 3.1 TOV, 6.8 PPG, 10.6 PER, ORtg 96, DRtg 107, WS/48 .035
PER = Player Efficiency Rating - "The PER sums up al a player's positive accomplishments, subtracts the negative accomplishments, and returns a per-minute rating of a player's performance". Every year the NBA average is 15
ORtg = Offensive Rating - Points produced per 100 possessions.
DRtg = Defensive Rating - Points allowed per 100 possessions.
WS/48 = An estimate of the number of wins contributed by the player per 48 minutes (league average is approximately 0.100).