This 4 set changed in 5.1.
If you actually read my second reply you'll see I already stated this.
TC is a personal choice, sure, but I highly doubt you couldn't free up time to weave it in without feeling you could drop a healer.
---------- Post added 2012-12-15 at 12:35 AM ----------
If you're actually trying to argue that mastery or crit surpasses haste as a throughput stat, you're wrong.
I'll lay it out very clearly for you.
Crit is a throughput stat which provides mana return and smart heals.
Mastery is a throughput stat, becoming more effective as the raid HP decreases, argueably being a mana saver as you have less to heal as you'll be healing more.
Haste is a raw throughput stat, as it does nothing for our mana, however increases our spell casting, reduces global cd and increases amount of hot ticks.
Haste, is our best throughput stat. Mastery would be if the raid was constantly at 40%, but that is never going to be the case. You have even linked the math yourself.
The only reason people are choosing to favour towards crit/mastery is because overall it is more effective at our current level of gear with mana as a factor. If mana wasn't a factor, haste would be the straight up option. Don't get confused about what is more effective for the overall picture, and what is the best throughput.