seriously, you'd drop for blu $2, heck it cost that much to back your car out of the driveway these days.
NF offers:
1) DVD rental
2) Blu rental
3) streaming
if I were to drop Blu , I'd just drop NF completely. I can get DVDs from Redbox for cheaper. My NF streaming via HD Tivos is pathetic and one of the worst implementations IMO (Tivos fault, not NF), so no lose there. The only thing keeping me with NF is being able to rent BR discs, since I don't want to buy many.
speaking of NF.... Lately I can't hardly find a darn thing even worth renting. A few titles I want (Breaking Bad, Californication) and so slow to ship, I can get them quicker via BT. They don't even have Clapton's Crossroads available to rent... and they wonder why people use BT for content.