So I managed to hit level 100 on character number 8 last night. This was the first one that I ran through with a fully upgraded set of heirlooms, so I now have a full set of data to support how much time I wasted on my paladin. Now I'll caveat this by saying I'm not an absolute speed leveler. I tend to AFK now and again, get distracted by things, sit there chatting with Thrall, mess around in my garrison, go running after treasures, etc. My fastest leveling time prior to this character was 17 hours and 51 minutes played. With fully upgraded heirlooms, and full use of xp potions, this one came in at 12 hours and 9 minutes, so almost a full 6 hours better.
I was pretty happy with how the priest felt while leveling. He seemed a bit squishier than what he's been in the past, which is in no small part due to the inability to keep renew rolling for added heals. I may try to do a bit of PvP on the priest now rather than immediately jumping to starting on leveling the next toon, which will definitely be the monk.
I also managed to finish the legendary quest chain on my third character, the death knight. Interestingly enough, with Death Knights being known throughout Azeroth for their stealth, I was able to finish the Garona quest on the very first attempt. I'm sure that's because of the extreme stealthiness of my DK and not because of all the practice I've gotten on other toons.
So that's it for this week! With the added xp from monk dailies, it will be interesting to see if it's faster than the priest.