If I need a bit for a given purpose, I will look to Whiteside, Bosch, Freud, & Amana in that order. Not because one is better than others, I feel that's the order of cost/benefit ratio to me. Amana make very nice, very expensive bits typically theirs are what I go to if I need something very large.
You want 1/2" shank bits in every situation you can, except some sizes of dovetail don't make sense to have a shank bigger than the cutting radius. Although many other bits the cutting radius doesn't matter if it's smaller, dovetail jigs are funny about that.
The sets of router bits are not ideal because they typically are all 1/4" shank, although many now have carbide they are lower quality, quite a lot are still HSS, either way can't be sharpened more than once or twice and half the time need to be sharpened out of the box.
Skil, Ryobi, Craftsman, HF, Irwin, etc sets are more or less all the same exact thing. In fact, Skil, Craftsman & Ryobi 30pc sets are the exact same set with different coloured paint.
That said, I picked up one of those multi bit sets many years ago for a great cheap price and keep it if I need to test something out or as a backup. Sometimes the palm router fits places others don't, it is good to have 1/4" bits around in case. That said you probably don't need more than a chamfer, straight with & without bearings (in other words at least 3 straights), roundovers, maybe a keyhole & cove. That pretty much covers it.
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