I got these “Elegoo” brand solderless breadboards on Amazon.com. Definitely a step up from the el cheapo breadboards. The cheap breadboards are typically warped, the holes are misaligned, and the letters and numbers are printed poorly. These are nice and flat, the holes are precisely aligned, and the printing is nice and sharp. These are 3 for $9.99 ($3.33 each). The el cheapo boards are about $1.99 each. These are only $1.34 more per board. Definitely worth the $1.34.
