A bakeware set is a convenience buy, useful if you're stocking a kitchen from scratch, less useful if you already own a couple of good individual pans since sets often include shapes you won't use often. Check exactly which pan sizes are included before buying, sets vary a lot.
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Wilton
A cheap way to get a cookie sheet, muffin pan, and a couple of cake pans in one purchase, reasonable for a first kitchen. Gauge is on the thinner side, expect more warping over years of heavy use than a heavier individual pan.
Rachael Ray
Widely sold and reliably nonstick, with the recognizable colored silicone grips that make handling hot pans easier. It's a mid-weight steel, not the heavy-gauge construction of a specialty bakeware brand, fine for regular home baking, not heavy daily use.
Cuisinart
A straightforward multi-piece set from a trusted kitchen brand at a fair price. Like most set-included pans, individual pieces are not as heavy-gauge as buying the same shapes individually from a specialty bakeware maker.
USA Pan
The rare set built from the same heavy aluminized steel and Americoat coating as USA Pan's individually sold pans, so you're not trading quality for convenience. Costs more than the Wilton or Rachael Ray sets, worth it if you plan to use these pans for years.
Calphalon
The widest shape coverage on this list, useful if you want to stock a kitchen in one purchase and avoid buying pans piecemeal later. Ten pieces is more than most bakers need, some pans in a set this size will sit unused.