Burn the Most Compatible DVD ? ? ?

I need to make multiple copies of a DVD project to be used on various set top players & computers. I want them to be as compatible as possible with most player. Considering my limited resources, I have heard several possiblities. (1) Burn at slower speed, (2) Avoid adhesive labels (3) Burn DVD ROM. Could someone please help understand #3 burning a DVD ROM disc. I tried and it would not play on my settop player.
If there are other considerations in the compatiblity area please advise me of them too.

Thanks - Video