I think the general feeling is that tool kits are not ideal.
I buy them as I need them since they are not all universal. These are some essential IMO:
-A decent set of allen wrenches (metric and standard)
-A decent set of wrenches
-Screwdrivers (obviously)
-Crank removal tool
-Cone wrenches
-Bottom bracket lock ring spanner and a pin spanner
-Headset wrench
-A nice thin wall 15mm socket to remove crank bolts
I am sure there are many many more, essentials but I think those are some that I use the most.
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