I am using Salter scales, those ones
http://www.amazon.co.uk/Salter-Desig...pr_product_top
I had to turn my biggest Star upside down because she won't fit on scales anymore until I found this
http://www.amazon.co.uk/Wham-Plastic...dp/B0076WGY50/
Salter scales are amazing as other reviewer form Amazon mentioned if they were destroyed I would buy the same again. 3.5 years serve me with no trouble and extremely accurate. I simply put the food storage box on top of the scales then press 'zero' button it will reset scales to sero. Buttoms are flat so I can push the box over the button and bingo! i do not have to turn poor Mitha upside down anymore.