i want to buy software to rip dvd, i find there is a product called blu-ray dvd ripper could not only rip dvd but also blu-ray dvd. of course, it is more expensive than dvd ripper (64.99 vs 29.99). i cannot choose which i should buy, because blu-ray dvd become more and more popular and i do not want to waste my money on out data product. also, is any here use blu-ray ripper here? does it work well? i want to buy top software.