I use the Tanita BF-350 at my office at the gym most of the time and still use my Tanita TBF-521 (which was one of my first pieces of equipment that i acquired when starting as a Personal Trainer) for corporate visits, Wellness Days and Home visits. I still keep my manual Slim Guide Plastic Skinfold Caliper when I have clients with pace makers etc. – cheap and fairly accurate (this is still within 0.5% of the Tanita’s readings! 🙂
As Shawn points out, “..reference of progress..” is what we should be looking at. Without getting technical, accuracy is important, but at the end of the day it boils down to consistency with methods used and the progress from one assessment to the next. I have successfully used my Slim Guide Calipers for many hundreds of clients showing their progress. Find a device that suits your budget and use and then get to know how to use it.
Tanita has software that connects your device to your pc allowing you to automate and streamline your assessments, they also include a nutrition side to the package which may interest you.