They are pretty easy to find, the clone Sat's are made by infinite.
https://www.digitalimports.ca/product_p/sat22.htm
http://shop.kickashvapes.com/catalog/5233390/the-sat22-clone-from-infinite
They will get hotter than the authentic, not the same grade stainless steel used, but its close enough if you want to give it a try.
As for more modern, the so called "genisis" tanks out there today are just mass produced chinese auto-drippers that can only use cotton. If you are mesh user, forget those, its a waste of money.
However, if you are cotton user, then the Sat22, or any micro chambered genisis tank for that matter isnt going to work for you.