Spell Mastery - Preference / Discussion

Now that the game no longer gives us every lower level spell to cast per encounter once we reach higher levels, which spells do you pick to master and why?

Here are my choices to get things rolling:

Priest:

• Armor of Faith (because 4 DR is nice to have, Blessing would've been easier to cast, but I had pretty high acc anyways)
• Consecrated Ground (sorta meh, but I was at a loss)
• Watchful Presence (nice to preempt unexpected burst damage)
• Devotions for the Faithful (I went with a lot of melee characters this time around, ended up being a very strong buff)

I wasn't sure about the lvl 2 spell choice, didn't end up casting it a lot, maybe an extra Iconic Projection or Holy Power as a buff would've been better.

Mage:

• Ghost Blades (a little AoE, wasn't really sure what to pick there)
• Concelhaut's Corrosive Siphon (I like to spam this spell over a group of enemies)
• Minoletta's Bounding Missiles (also something just to throw out without worry)
• Minoletta's Concussive Missiles (same as lvl 3 choice)

Haven't had a druid in my party this playthrough, but I'm interested in hearing choices anyways :)

edit: also, I'm a little sad that the AI doesn't pick up on mastered spells being available per encounter. hopefully we'll get that patched in eventually.