really depends on what you want to do man, I'd sell one of the Éclairs simply because it'd be nice to have a not-so valueable camera to shoot more simple things with (i like to shoot stuff on the beach, etc. and theres a lot less risk of you messing up a really nice sync sound camera (dont get me wrong the Bolex is nice). The ACL seems like a better thing to sell(simply because of the dual lens mount) but I like the ACL more because of the ergonomics. Bottom line, think about what you'll be doing, we can only help you to a point man.