list your best no nonsense grind XP zones

[Nyrod]

if i wanted to do nothing but grind solid experience what are the best zones? i know the wiki has a good list but as it says we dont know for sure the ZEM of every zone and some are changed. im working with freaking max penalty (iksar sk) and dont want to be stuck in a zone that is slow as hell. im currently lvl 21

what zones do YOU use to PL and or solo the best XP etc etc?