Thanks for the mention! Appreciate it. :) The bulk of our business (2/3rds of subscribers) is non-Pro. We come off as fairly professional (and we love our Pros!), but I think that's mostly because we have a huge emphasis on presentation. Our philosophy is, if you care about photos enough to pay for somewhere great to keep them safe and show them off with the people you care about, you're in the club. We'd love to have you.
Flickr would probably require some tuning, as it's built as a social, not private photo-keeping, tool. SmugMug, though, is targeting professional photographers, so high-res, galleries, exporting is all there.
Flickr pricing is kinda off-putting - $0 for 1TB, $499 for 2TB.