The only thing I know about Jeff's products are that the Chuckleheads are fiercely loyal. The quantity of devices that he's sold, as quickly as he has, speaks to the quality and performance, methinks.
I don't own a Chuck nor do I have one on order. But, I have spoken to Jeff on a few different occasions regarding Chuck graphics and about Ford muscle cars from years gone by. So, there's no product in my hand that can sway my opinion of him one way or the other --
That said, I think the world of him. He's courteous, attentive, returns PMs/emails quickly and most important of all -- he's got a great sense of humor. LOL
I would have a Chuck on order if I didn't already commit to 4 devices that are already on their way. It's inevitable that I eventually own one or two though.