Hello and welcome home! Northern Maine, eh? I've got a teacher from there, said she wouldnt wish it upon her worst enemy, lol. Pretty cold, apparently, and always dreary.
So Commodore, eh? Good stuff, I've got a few around here, but go figure all my PSUs for them are in WV. The C64, as you may know, was the single best selling computer of all time. IBMs lately have seen alot of attention on here, seems a few of us got NOS IBM PS/2 80s. Really though, they're all worth owning as Tezza touched on. I dont think there is really any "one" up and coming, they've all had their few years of fame. It seems to just be what your platform is. Really, though, the C64 still gets some attention today and will always be remembered for what it was--a great home computer and gaming platform that sold EXTREMELY well in the 80s.
--Ryan