I think I will get an EFR tube as I have had bad luck with RECI. Any suggestions where best to source them?
My first RECI tube (a Z2) lasted only a few months with careful use (never more than 90% and that rarely) and was replaced by them, under warranty, with a new S series tube. With less than 10 hours use, the mirror end developed a hairline crack. RECI is (slowly) "considering" the case. I'd like to get back into production, so rather than wait any longer I want to order a tube now. From the pictures on-line, the EFR tubes use water cooling on the mirror end as well as the body, unlike the RECI tubes. Makes me wonder if it is to avoid the kind of problem I just had with the RECI.