So, you're looking for the best bamboo rayon sheets available, and understandably so. But, before you get there, you need to be armed with some information that we will cover right here, right now.
There are only 4 different kinds of bamboo sheets, and 3 of the 4 are indeed rayon, and unless you want stiff, rough sheets that are not prone to give you a good sleeping experience, you'll be buying rayon bamboo sheets anyway.
You have viscose, modal and lyocell. They are first gen rayon, 2nd gen rayon and the 3rd generation, which is based on nanotechnology. Each gives a different sleeping experince. You need to understand which is which when looking at bamboo sheets.
Each of the 4 different types of bamboo sheets has different additional qualities or negatives. It could be that they sleep cooler for people who have night sweats, hot flashes during menopause, or just someone who runs a little hotter than the average person.
Some of the types of bamboo sheets can help with skin issues, and are generally hypoallergenic. If you have one or more of these conditions, you need to know which is best for you.
You need to research brands. Brands have their names on the line with each set of sheets they sell. You can easily find list posts like this one on Bed Space that shows you the most popular brands of bamboo sheets. Then do some searches for reviews of specific brands and you'll likely find real user reviews by people who bought the product and have used them for some time before writing the reviews. Check the dates of their reviews.
Following these steps will likely make your quest for the best bamboo rayon sheets a breeze.