Yes Blu Ray will start off very expensive. Since it's almost 6x
more storage compared to DVD single layer.
It's not worth to wait lah.
When Blu Ray is 2-3 yrs old then consider. Because when it's out,
it will quite definitely be problematic. 
Few questions
Your Budget?
Your present PC/notebook specs?
What will you be using it for most of the time?
Cheers
