Who makes a good TDS meter?

[Kaos]

I have an old Primo TDS meter that came w/ a RO/DI unit I purchased years ago. I'm not sure if I need to get a new one but was wondering if there were any front runners for TDS meters (like Deltek, H&S, EuroReef, BK are in skimmers). TIA.

 

[Billybeau1]

I use the HM dual in-line tds meter and have been very happy with it.