I know this is entirely anecdotal but perception is reality and all that. Level 60 roulette has way more dungeons in it than expert, yet I'll be damned if I don't get more variety out of expert from day to day. The consistency at which I get Aetherochemical Whateveritscalled is both staggering and frustrating. I'd understand if I got a newbie bonus with it but I don't think I ever have... maybe once.