Seems you already know...
Hey Sean, I would say that you probably already know the answer to your dilema. I have not had much experience with Canton's LE series, but you seem quite attached to them. I have a full set of Ergos for my HT theatre system and couldn't be happier with them! I have the 502 CM, which seems to be last years model, for a center channel and it is a fabulous speaker!
But like stated earlier, give the Axioms a go if you can, just so you know you made the right choice in the end. If you dont want to drop the cash on a purchase, see if anyone in your area has them and would be willing to let you pop round for a visit.
Ben