I prefer a ratchet + socket. It's more comfortable on my hand and I get more leverage with the longer handle. Flex head also helps in tighter areas where a regular wrench would be less useful.
Ratchet/socket first. Currently only have SAE ratcheting wrenches up to 3/4". (3/8-3/4, Craftsman Industrial USA made with roll pouch.. think I paid $29.99 shipped brand new for them..)
Grade 8 fasteners are not very friendly to wrenches. lol. I'd rather use a stronger socket than a wrench that breaks.