24 months no interest. I have used Affirm several times on EBMM's website with no complaints. Given current interest rates, it is definitely worth taking advantage of the free financing.
Ditto; I've always gotten 0% interest for 18 or 24 month options. Might as well borrow someone else's money for free if they're offering. I used it for two Sterling orders, and will probably use it for a Stingray with the Slo Special neck once they officially open the doors on the CDE.