The Plus features will make it easier to find information on which startups are necessary, but it won't tell you outright which are/aren't needed.
Different people use their machines in different ways, so there is no way we can say what you don't need.Systemlookup
has a list of most common startup items, and it gives a general recommendation for them
Y = Normally leave to run at start-up
N = Not required - often infrequently used tasks that can be started manually, if necessary
U = User's choice - depends whether a user deems it necessary
X = Malware, spyware, adware, or other potentially unwanted items
I hope this helps