I've stacked Intell/MP5/Crit/spell power in my gear and have avoided haste items and have no problems with it. Sure recount is ugly and I'm always out pwned on the healer meters, but I'm discipline and i will never pwn the healing meter if i'm with any other spec, class in comparable gear(ever).
The way i've thought about it is that haste Brings OOM faster and is a terrible way to manage your mana, and it always seems to sacrifice some other nice healer stat to get, like crit, which i like with all the procs. Haste to me is a means of trying to pwn the healer charts, and i guess if there's no mana conservation needed then i guess its not bad thing. But with the mana regen changes in 3.1 making mana conservation more of an issue possibly, where is haste going for importance to a healer?
I healed EoE10 on the PTR in 2 month old gear and despite having mana efficient flash heals i went OOM by vortex 2 and we wiped and couldn't complete the encounter. I hope that the mana (balancing) didn't go to far and we start wiping more often to OOM healers. But that was actually part of TBC challenge of healing that i remember. Not a bad thing i guess TBH....but i see no relivance for haste gear now for healers other then pwning healing meters and going OOM faster, which really doesn't help the raid if you wipe at 5% cause you went OOM trying to pwn recount.
I've always veiwed haste as a dps stat and not a good trade for healer stats. But i suppose thats an opinion we'll see how plays out in Ulduar. ;D