I've been watching out for a DVD-R burner for a loooooong time 🙂
If the question is 'do I jump on THIS drive' then you still have a less than clear answer. DVD-Multi, the spec that covers both +RW and -RW, is supposed to be coming down the pike soon. If you're not in a rush to start writing DVD's, you might want to wait for that. Additionally, the media has dropped as well, and will only continue to do so. By waiting, you get it even cheaper when you do decide to get into the game.
That statement, made generic, applies to ANYTHING when it comes to computer hardware. Of course - the longer you wait, the longer you don't have stuff to play with 🙂
If we're talking 'what DVD-RW writer do I get' - then this is the one. If the DVR-A03 was cheaper (like $150-199) then it'd be a contest. Considering it's price hasn't dropped at all - if you're getting a DVD-R, should be this one.