I'm looking into buying a new braille display, but can't afford the more expensive variety. I've gotten to play around with the orbit reader. I love the battery life and the firmness of the dots, but I know a lot of people whoVe had issues with dots not working after a few months. I haven't gotten to play with the BrailleMe, and I've heard that there have been issues with dots not popping up all the way. Do both displays use the same technology for developing braille cells? Is the battery life comparable? Any thoughts on build quality and performance quality in either? Thanks for your help.