Creating compatible DVDs: Stuttering & Colour Temperature

There are several parts to my inquiry. Personal experience very appreciated, but also any FAQ or bibliography.

1. In your experience which is the best type of original media for creating a DVD intended for mass production and potentially glass mastering? e.g. DVD-R; DVD+R, et al.

2. Is there a brand of DVD media which is more reliable than others. (I've generally used Ridata.)

3. I have well over a GIG of RAM and no difficulty in playing an authored DVD without stuttering. However, some clients have older pc systems with CRT monitors, age unknown. They complain about the following:

a. Colour of some animation displayed on their monitor is too dark. (Just fine on my Samsung 713v or my NEC MultiSync LCD 1700v.)

b. Either the DVD stutters on the computer right from the beginning (but never on my system or my standalone Toshiba player); or after playing several selections, there is stuttering.

**The amount of material - video and also animation - is under an hour, but I guess my question is how do you ensure to avoid the above complaints where the age of the computing system is not known?

**How should technical instructions be expressed which can accompany a DVD indicating a cut off of compatibility, or "plays best..." under these conditions.

Cheers, and thanks so much for your collective wisdom.

Bill in Toronto