Both are amazingly accurate little powerhouses. If you don't reload, the 45 ACP Glock 30 would probably be easier to find ammo at your local store(s) of choice. If you do reload a quick check of Starline's website shows the cost of brass being a wash between the two. If you're planning on using your selection as a carry piece for backpacking, the Glock 29 might be a more suitable choice. Both can be used for multiple classes in GSSF competitions (should you be so inclined) and the 30 would be a capable contender in IDPA as well in the CDP division (as Mas Ayoob has proven). So, what is/are the intended purpose(s) of this gun?