I always used a tray. I do 1:1 on D-76, which means a tank gulps up a lot of expensive developer. Tanks may be fine if you do straight developer and replentisher, but I don't shoot enough to justify this.
It's only a liter of chemistry, Rodinal or HC-110 1L isn't a lot of chemical.
And I don't have a darkroom so it has to be a light tight tank...
~Stone | Sent w/ iPhone using Tapatalk
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller