Bill Barnwell said:
I don’t know the gems are dirt cheap and best thing is you don’t have to drill any holes, words spoken by a lazy man
I have used both with great success. I used the gems on my (now) shelf queen 2-6-0 tender
I wouldn’t argue either one. Both do the job. Yes drilling is a pain. Can’t argue that. The gems to my eye, even the smallest ones I could find seem a little big. But each to their own. I don;t think a person would go wrong either way.