Hi, i'm looking for a pronto to replace my remotes, meanwhile i'm a litte confused about all models. So can anynone elucidate abou the differences between the 950, 970 and 980. Has the 970 and 980 relate to 950, anything more than the colour display. For first pronto is the 950 ok, or should i save a litle more and invest in one of the others. This seems like when i search for my av equipment, i'm completely lost.