I do a lot of data backups. A LOT. I would say that 80% of my business is data recovery, backups and transferring.
I always run 2 in my machine
I still have the 2500 in my wife's machine.
I moved to the 3530, and sold those used after around 500 burns each.
Moved to the 3540, which I couldn't even guess how many burns (one just bailed out - gets about 30% then writes 4x for the rest of the disc).
I have 2 3550s on my workstation and the 7170s replaced the 3540s in my main machine.
I have a 3550 in my daughter's machine too.
I always recommend the NECs to my clients, I am responsible for well over 100 sold.
They have my loyalty. Great, cheap, and you guys make them beyond excellent.
Thank you again.