There are several major manufacturers of bike tools out there - Park Tools and Pedros come to mind first. However, all of them spend huge amounts of money on advertising, team sponsorship, and other forms of corporate brand-building which drive up the price.
At the moment, I'm looking to buy a few tools - a crank puller (preferably one that can do both splined and square cranks -I'm told that the square pullers will do splined with an add-on adapter?), a set of tools for unlocking cassettes, and one of those doohickeys for cleaning a chain while it's still on the bicycle. Is there a "generic brand" that does the same job without the hefty pricetag?
I've also noticed that some tools seem needlessly specialized. For example, a complete set of cone wrenches from Park Tools would cost me over $50, but I seem to have good luck using some very small adjustable crescent wrenches I bought from a garage sale for $4. Is there any reason I shouldn't be using them?