Hey! I'm a big fan of the Boox Nova C Air. It's my favorite purchase of the last year. But to anyone reading this... do not try to buy it through goodereader[dot]com. They seem to be the front retailer for Boox, but they are an extraordinarily shady company with no physical address or phone number. After a lot of lies and shipping delays from them, I had to actually cancel my credit card and do a charge back after they failed to even ship the device... and it turned out they only had to put an order in, which they failed to do after taking my money.
I had no problem once I ordered directly from the Boox website, and the product is great... I love it. Just watch out for the website linked here, they're scam artists.