Made in North America - these needles may be the best thing you've tried. Developed originally for people with arthritis or other hand issues, we find these square needles comfortable to use and with the sharp point, they're great for getting in those tough stitches.
Yes, your stitches are the same with a shaped needles as with a round needle. You should do a swatch as you may find your gauge changes. Many knitters go up a needle size to get gauge.
Made from machined aluminum. They come with a lifetime warrantee against manufacturers defects.