The Aluminum res's from XSPC aren't bad to be honest. (I'm not an XSPC rep but I've been there and used products etc) Got a few from 2yrs ago as well as having got 1 myself and after 2yrs they still look great inside. Draining them apparantly helps prevent but Paul showed me his 1 that he uses for testing with his new block designs and it's his old faithful and I can see why

I'm not too bothered about restriction cause my 1 will be used to feed 2 loops rather than be a dump box...

~Bex