The new 30.1 is an amazing speaker. Yes it is smaller than the C7es3 and costs quite a bit more than the c7 and even the super 5 but it is one amazing speaker. I'm not kidding when I say I lay awake at night thinking about how sweet it sounds. I would say imo that if you're room is the right size for it you should persue the 30.1. For my ears its the best they've ever produced hands down. They're going to sell a ton of these speakers once people start to hear them so of course used will come fast. Have a listen for yourself. I personally would choose the 30.1 over any of them. I own the C7es3 and have heard them all.