Both classic albums, but Doggystyle is better to me. Dre is actually pretty good of a rapper for a producer, he gets good writers and recites them well, but no match for a prime Snoop with his effortless flow and smooth style. Plus you've got more of Kurupt on Doggystyle who even outshined Snoop on some tracks together. I hate that the newer versions don't gave Gz Up Hoes Down due to clearance issues with Isaac Hayes.
Having played MarioKart to both while comically stoned, I'd favor Doggystyle Nothing but smooth sailing, uh uh uh