For me, it comes down to what is most likely to get the most use in the next few years depending on what friends and family are finding interesting in terms of hunting and competition. If we seem to be one rifle (or muzzleloader) short come deer season, then an appropriate rifle or muzzleloader is next on the list. If we're stretched thin for rimfire challenge, then adding another 22 LR to the mix that is well suited for that would be a priority. If hitting action pistol pretty hard, odds are good we're looking at another 9mm.