I probably wouldn't. Just did a quick check and Meeks averaged 15 ppg last year. 5 more ppg than other previous year. With Kobe not on the court, so everyone got more touches/shots. So it's hard to tell if he's going to consistently put up those numbers. Martin is a pretty safe 15'ish ppg every year. Meeks other stats (reb, asst, steal) are pretty weak. With Kobe coming back and taking all of the shots, I wouldn't bank on Meeks putting up big scoring numbers. Martin is a safer bet IMO.
*Edit* Just did a quick stat check, Martin is more like 17-20ppg easily. And he plays in MN, with Kevin Love gone. So he has a lot more freedom to take all the shots he wants.