The pacmate bx440 hasn't let me down. 40 cells of braille is ok. I have a braillex here at work and an alva 380 at home. That is probably why I don't use the pacmate as much as I thought I would. Surprisingly enough the alva is about 13 years old and asside from a little cosmetic damage on the right side it works great. I tried to sell this one a while back and was told that 1800 was to much to ask. If that is the case, I'll just hold on to it. I do use it regularly.