I'm pretty noob to 8-bit a2 goodness and what experience I do had came from using my buddy's //e w/ DOS 3.3 back in the day. It seems with a GS you got system 6, contiki, or ProDOS8/16, unless messing about with DOS3.3Launcher.
I'm now getting into playing with a IIcPlus and a hot rod IIe. It seems there are even more choices out there (ProDOS, DOS3.3, AmDOS, DavidDOS, etc..) Besides the obvious contiki for my IIe's uthernet, is there a 'Holy Grail' of DOSs?
If not? What/which is a good starting point?