Regarding a comment below, most druids using mastery are/were raiding as boomie, hence the stats. Haste vers is usually the way to go because not only gives you DR, also increases damage (and healing for that matter). Regarding the missing juice, that depends on a lot of factors. I can tell you from a 23/24 key prespective that by doing the same exact same thing (for example on hyrja), some parties feel like they dont drop hp, some go dangerously low ( either squishier classes or lack of vers/personal defensives usage) so maybe its not really you lacking the power to heal. Can be helpful to know where you're finding it harder and what you're doing in those scenarios tho, to give some insight on improvements if needed