i think the biggest argument for buying a tool set is it increases the likely hood you will have the tools you need when you need them.
its no fun to stop what you are doing and clean up enough to get itn the car to go to the bike store to see if they have the tool you need to be told they don't have it today and then have to buy it at nashbar and amazon.

why can't someone make a good tool set that includes
crank extractor, botom bracket tool cassette remover chain whip and mayb a chain breaker. maybe a multiy spoke wrench as well.( i had one)

i just bought that on amazon for about $50 with a combination of park and sunlite tools all with good ratings.

i am 42 years old and have a nice collection of tools for working on cars, computers, the house etc. I am also old enough to appreciate a good tool versus crap.

i could have bought complete tools for 37 but i really don't need another set of allen keys or tire levers or another adjustable wrench or screwdriver or box end wrenches or patch kit. by throwing that stuff i don't need in they had to reduce the quality of the whole set.

there have been a lot of what tool shroud I buy threads. it would be nice if there was a sticky listing what go with what jobs and what are good altertnative to the part tools. maybe even a public amazon lists