When I first hit 70 I had issues admittedly. I respecced shadow for a week to farm primals for my mooncloth set, which I have to say was eye-opening as I'd levelled my first priest holy so yes I was surprised at how much faster things died.
As my healing gear has got better though I've found that the +damage element of my healing gear was better than dps gear I could have easily picked up and the gear I had soloed with up to 70, so for the most part my healing gear remains the same as my soloing gear, I do switch out some gear; namely a trinket, weapon and neckpiece for caster gear but otherwise everything dies quickly enough for me not to be an issue.
I'm sure if I spent a bit of time I could pick up a second set to improve my dps and efficiency a little but to be honest mobs which were taking an age to die when I first hit 70 die quickly enough now that spending overly long picking up a full second set seems a little pointless.
If you're in a guild that doesn't mind you picking up off-spec tokens for tier gear (where no one else can make use of it) though or groups in instances that don't mind you rolling on off-spec gear for soloing on items that would have been sharded anyway then pick them up, every little helps, doesn't hurt to politely ask if they mind.
Edited, Jun 25th 2008 8:49am by cococj