Well, the Guitar Center I ordered an FX10 from sent me a pedal that on the front looks totally fine, but the back of it is alllllll jacked up. The backplate is bent out of shape and missing a screw. The GC only had a photo showing the front of the pedal, nothing from other angles. So call them and check first. Going to get my refund over the weekend.
Thanks for that clarification on the FX10/410 circuit,
@DigiTechRep. At this point I'll probably just get a new or used 410. If I find a good FX10 down the line I'll pick one up and I can judge any differences for myself.