DP I can't say, I only have Platinum and Soul Silver from 4th Gen.
Pt I'd give a 7ish, just because I catch wild Pokémon on that game, breeding is hell with all those moving NPCs.
SS is a straight up 9 for me, I love being able to hit my seed all the time and checking what I'm on as well. I highly encourage you to use ZomgTimer, it's the best timer for all RNGing. And, practice makes perfect, I know it's cliché, but it really does.