Six of one, 1/2 dozen of the other. Handheld tuners are all capable of just simple (and limited) tuning options, and are mostly used just as interfaces for loading eMail or canned tunes. If you feel you may someday use a local tuning shop find out what they use--most likely SCT...
If you feel you may one day want to tune on your own get a more capable system like Delta Force Tuning's Special Forces or Commando packages.
- 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum, Delta Force tuned,
Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.
New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq