And 2 liter working solution is better than 1 liter right?
It is, particularly if you happen to have any really big developing tanks.
The container I use happens to be 2 US quarts, which is close to 2v litres. I like them because that was what the Dollar Store had with the features I like:
1) robust, fairly heavy duty clear plastic;
2) a hand grip molded in, for ease of handling;
3) both a wide mouth opening and a smaller pouring spout in he cap, which seal tight and are made of plastic, not metal.
4) tall, with straight sides and a relatively small footprint.
They are actually designed for relative large quantities of mixed up from frozen fruit juice, and they suit me well.