Which is the best +R DL burner?

I’ve got two burners working till weeks ago, but the 716a is dead now.
The other drive is NEC 3540, it works great for me(with L&D’s 1.W8 firm).
I’m planning to get the third one, and I’ll start to burn more +R DL medias in the future. I really love the 3540 very much, but if I should get the second one for the DL burnning or a BenQ 1650 instead?