Everyone has their preference in brands/woodshops, but if you're just starting out again, you won't know the difference. Any board will do. If you're going the "shaped" route, I would suggest a Black Label Lucero X2 or any Anti-Hero Grosso board. Other companies seem to use shaped boards as novelties and are often just cosmetic.
Regarding concave, deck thickness went from 1/2" to 3/8" some time in the early '90s, so increasing the radius was necessary to maintain stiffness. It increased more as decks thinned down. At some point, I thought concave just became absurd, so I bought a deck with a mellow concave and could not stand how flexible it was. Steep concave is a necessary tradeoff and you'll get used to it.
Also during the early '90s, wheels became a generic product. Speed Wheels were far superior to everything that came since, but they flatspotted too easily as blunt slides became popular, so we traded rolling resistance for flatspot resistance. Most people today ride smooth skateparks so it doesn't matter what wheels they're using.