Depends on experience and type.
Autopilot essential for serious SPIMC.
If flying complicated SIDs STARs etc, GPS (not necessarily moving map) but must be coupled to autopilot.
Glass vs Analogue. Depends on what you are used to. Certainly if you have been trained and have experience in the use of glass it is useful. But it takes time when first converting to achieve the reduction in workload.
All weather capability depends on what you want to do and how much you want to spend.
But the most important is a set of weather parameters within which you plan to fly. Outside those parameters, you don't fly.
My answer to the question is:
Depends on what I am doing, what the weather is like, where I am going and how important the flight is.