All current Blu-Ray players on the market also support DVDs. Blu-Ray players also incorporate the red laser required by DVD's but your quality will still be that of a DVD.
yes .... i have a dvd player . Blu ray can be played on dvd players that have that function . As you were saying they can already play both . Is a very good thing the blu ray . More space and less quantity cause is very little the bluray
I suggest you to buy a PS3 because you can both play Blu Ray/ classic dvd. Above all,you can always play games within of it, of course. Anyway, to have a PS3 is an advantage.