1, 2, and 5 are my main heals while 4 is my disengage or resource replenishment. On bar #1, 3 is meant for replenishing resources while on bar #2, 3 is meant to support your team with debuffing enemies mid fight. Mend Spirit's right-click channeling heal consumes a lot of Magicka, so having Deep Thoughts on one of my bars does help a little.

It's a toss up between Bar #1 and #2's ultimate, it's like Zenyatt'a ult vs Lucio's on Overwatch. Light's Champion offers some excellent buffs and some great heals, but only for 5 seconds, whereas Reviving Barrier gives a huge damage barrier and a whopping 30 second heal over time. I don't think the numbers for the barrier or it's HoT are correct on here, and they're definitely halved in PvP vs PvE (I think?).