Hi Dan,
The 6 or 10 liter are nice sized ultrasonic cleaners depending upon your budget. The one I use is a 3 liter which works good for small motor carburetors and parts, but if I was to purchase another unit I would go 10 liters or larger to have the option to do automotive carburetors and larger parts too. As for brand not sure which are better, seems there all Chinese made so you are just taking a chance there. I have to say they do a real nice job and make the carburetor parts look almost new. Hope this helps you.
Steve
