I had the ebosser demoed to me and the plates got stuck....they had to be bashed out with a hammer. Although it takes the bigz dies, it wont cut thick chipboard. IE mountboard which the big shot/bug will do.
Plus it didnt cut a cherry lynn doile die as well as my big shot
The calibur will only take thin does like nesties and Ive "heard" that the "mechanics" inside are aluminimum as opposed to steel (like the big shot) so will soften in time.
The big shot, in my opinion, is a real workhorse so, if I decide to go A4 I will spend the extra and get the big shot pro. I know it will cut all materials, mountboard and its manual. Electric machines ie the vagabond have not had good reviews.