My predecessor in the older Harmony 625 'shone' by key malfunction, so spare her had. The display this handset is very easy to read, the buttons function and soft due to the ergonomic design of the back is this remote comfortably in the hand. About the software for programming I do not need much to write, this is getting used to from time immemorial, but without 'moan' over the data of the previous model.