There are so many holsters available for the SIG P229. It would help if you could narrow it down more, as holster choice is such a personal decision.
Is this holster going to be mostly for OC or CC? Do you prefer IWB or OWB? Do you prefer leatehr or Kydex? Do you have a holster for another gun that works well for you right now? Perhaps you should get a similar holster for the SIG.