I can not speak for cjclemens, but for me....I have 2 - 223's now. If I were to get a Model 25, it would be in 222. The main reason I have 223's; they are much easier to get, not because they are a better cartridge. Remember the 222 Remington came first, the military adopted the stretched 222 (mostly blew out the shoulder and lengthened the OAL a little). The 222 Remington has a standard 1 - 14" twist barrel, ideal for 52 grain and under bullets. If you like shooting lighter bullets the 222 does extremely well with 50 grain bullets in the 3000 - 3100 fps range. The 223 defacto standard now is 1 - 9" twist. there really is very little difference in performance between the 222 and 223. The 223 can handle heavier bullets, but for varmint hunting I prefer the 50 grain and lighter bullets. If you hand load, the cost is about the same to reload one as to the other, if you buy your ammo, the 223 and the 222 is the about the same for premium loads. For cheap loads, there is no such animal in a 222 Remington. Bottom line...if you hand load, shoot 50 grain bullets and lighter, you are better served with a 222 Remington. Did I mention that the 222 Remington was THE bench rest cartridge for many a year only getting deposed by the 6PPC? So it is accurate and is easy to make shoot very well. I have only owned 2 - 222's and both of them shot very well indeed. That is why I would choose a 222 over a 223 given the choice. If you want to sling 65 -70 grain bullets down range, then a 222 is not for you.
BTW the 2 - 223 that I presently have, one is a 1 - 12" twist (Handi Ultra) and the other is 1 - 14" twist set up and throated for 40 grain V-Max bullets. The neck diameter is under size so I turn necks for it. I get 3700 fps out of a 26" tube. Yes, I like the slower twist barrels.
Good Luck and Good Shooting