So far my account with LoveFilm has gone really well. For £10.99 a month I get a game at a time and an unlimited amount per month for an unlimited amount of time. This means I usually get four games for the month and spend about a week on each one. This is excellent as if I were to rent these games then it would cost £5 per game for a week. It is also extremely useful for getting those games that aren't worth a purchase due to their short length.  
As of today the service has been really good, the first class post system means I'm never without a game for a day and it has saved me a lot of money so far.