Which is better for wire wrapping?

The 20-gauge roll. Its thicker wire holds bends and supports wraps and links. The 24-gauge is better for tight, decorative wraps around a base wire.

Which works with small beads?

The 24-gauge roll. At about 0.51 mm it passes through small holes that the 20-gauge wire will not fit.

The 20-gauge roll gives 24 ft against 20 ft, and its thicker wire resists snapping. The 24-gauge is more prone to kinks and breaks with repeated bending.

Is the 20-gauge worth stepping up to?

Step up if you make clasps, links or structural pieces. Stay with 24-gauge for stringing and fine detail work.

Can I use either for bracelets?

Yes. Use 20-gauge for bangles and memory wire style pieces that need to hold shape, and 24-gauge for strung or wrapped bracelets.

Cousin DIY Silver-Coated Copper Wire 20 Gauge vs Cousin DIY Metal Beading Wire 24 Gauge

Both are silver-coated copper craft wire from CousinDIY, so the real choice is gauge. The 20-gauge roll is thicker and holds shape better, which suits wire wrapping, links, clasps and beads with medium holes. The 24-gauge roll is finer and more flexible, which suits stringing small beads and delicate wraps. Owners rate both well, with the 20-gauge slightly ahead on ratings.

Choose the 20-gauge roll if you are wire wrapping, making links and clasps, or stringing beads with medium holes that need a stiffer wire to hold shape.
Choose the 24-gauge roll if you are stringing small beads, doing fine wire wraps, or want a softer wire that bends and threads easily.

Prices

Cousin DIY Metal Beading Wire 24 Gauge: $4.97 at Walmart (last seen Nov 10)