Richer Sounds currently have an offer on something called SSCR290 which is two rear speakers and a centre speaker for only 50 quid. Does anyone know if they are any good? I currently only have front stereo Wharfedale 8.2s with my amp and want to add surround. Alternatively I could get some KEF Cresta 1 for rears (£60 at RS) and not have the centre speaker. Any opinions?? budget is limited to £100, I know that isn't very much but I have to stick to it.