Yayyy! I'm glad a lot of you leared to tell them apart with this thread! They are hard to tell apart, but it's really true - once you learn their personalities, it just clicks.
I'm embarassed to say that I can't tell Paige's BCs (Spanky and Bandit) apart!
PS - another way to tell mine apart is that Ilsa's collar has two rows of little button studs, and Ronin's has sheriff stars AND button studs...