We have used several and the quality is OK, but not great. Made in China and Malaysia. We usually replace the 3/4 extension drawer slides with full-extension slides.

Keep the receipt. Most stuff sold by SH since it was purchased by Ferguson is guaranteed for a lifetime, but you need the receipt to make a claim. To make sure you can find it 20 years from now, put it in a plastic storage bag and tape it to the inside back of the vanity. Even if you forget where it is, the plumber will find it.

You might also look for bamboo at Vintage Tub & Bath.

When was Signature purchased by Ferguson?

2016 or 2017, not too long ago.

Interesting. I've bought from them since then.