I'm looking to buy a CZ Carbine (18.5" barrel with iron sights) in .223 Rem. I like the short length, light weight, and I think it will make an excellent walkabout varmint rifle. I don't really anticipate even using a .223 on deer (I have plenty of other rifles to use), but I kind of like the idea of being able to shoot the heavier bullets if I choose to (for whatever reason I haven't figured out yet). I think it would also help re-sale later on down the road, since I think a lot of people look for the 1:9" twist (and conversely it seems that the 1:12" twist has a bit of a stigma). The 1:9" will be roughly $50-$100 more than the 1:12".

I'd like to hear some thoughts from others on whether or not they think the faster twist in .223 is worth the extra cash or not?