we currently have a 320gb external hard drive for our somewhat slow laptop. it is getting very full and its time to get a new one (it is full of mainly music, photos and videos). we were thinking of getting a 1TB external HD and see a few different ones on the market including one that backups the data. can anyone advise which might be the best one to get please? the 320gb one we've had for a few years and had no problems at all. cost is a huge factor in our decision as we're prettty broke right now! dse have some specials though.

your advise is greatly appreciated. cheers.