Questions about: bits

Both are good and functional. It probably boils down to preference, at the end of the day. Bit holder: +uses cheaper 1" bits +over time, you'll probably acquire bit sets that include a bunch of 1" bits, so there's a good place to use them +for obscur
For ordinary casual woodworking and household maintenance, almost any drill bit is sufficient. Fancy coatings make little difference for light-duty use. "Split points" can make drilling in exactly the right place easier on difficult materials; I have
The term plexiglass can be misleading because it is not really glass. It does look like glass, though, being transparent and clear, but it is actually hard plastic. More technically, plexiglass is a thermoplastic called polymethyl methacrylate