I was soloing my lvl 65 bird with x4 elixir in AOII plas pyramid. It took me a little under 5 minutes (and I'm slower than some) to clear the lvl.

Thats 700 xp base plus the bonuses for mobs and bosses (whatever that adds up to) every 5 min...

I think thats pretty strong soloing, and I'll bet there are a few areas that are even better for racking up hefty solo XP runs.

I love the new elixirs!