The RAMS/8 works really well, and replaces the huge Apple RAM expansion board nicely. Everything I've thrown at the board under GS/OS indicates that the board works perfectly.
A little bit more documentation might be nice, though. There's none in the package, and none that I could find on the vendor's website. Only a small mark on the board indicates which way round it should be installed. It might be nice to have some links to RAM tests or other diagnostics too.