On a scale of 1 to 10, how challenging has 5th edition turned out to be?
The tactical play: 5-8 (5 for those not using PEK, 8 for those stuck in It's gotta be as tactical as 4E! PEK mode.
What's PEK?
Prior Edition Knowledge

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.