Hello WestChi and welcome to the forum.
We sound very similar in our collecting history. I started again a year and a half ago after being away from stamps for about 30 years. Sold my childhood world collection to concentrate on Canada and US stamps (although I find I now have several small side collections).
I collect both used and mint for both countries up to an including 1960. Most after that I'm not really interested in, though never say never. I don't tend to spend a lot either if I can help it. But you can get some great deals on
ebay if you shop around carefully (just won a complete mint Liberty set, except the $5 stamp, for under $6).
But again, I find I run across so much other stuff I think is great that I do have a tendency to get somewhat sidetracked in my collections. That's half the fun.
Goodluck.