1. No DVDR's(I'm aware of) have remaining time(I've tried probably 8 different mfg's). The only DVDR I know of with TOTAL time, is the Philips 3575(there may be more, but none that I'm aware of).
I REALLY like remaining time, this is one of the reasons I never play on my recorders. I just record to a -RW, then finalize, then play on my Sony DVD player which had all the times, including remaining. I think there must be a reason that remaining time cannot be displayed on a DVDR. I don't know why, but even Sony's which include this feature on there players, do not have it on there recorders. You're not dense, it's just the people who designed DVDR's, who thought this was not an important feature