I 2-healed Norushen HC with a monk and I tried Selfless healer with 9k spirit. It was much worse than EF in my opinion.
I'm not saying SH can't be good, but it should be good with druid/monk healer and still EF was a lot better for keeping the raid. From that I came to conclusion SH cannot be better than EF.
On some fights I might consider SS but it isn't as responsive as EF for my taste so most likely I will stick to EF(Thok might be an exception, we'll see when we're there).