All the portable ones basically seem the same. I haven't seen the episode but my sister immediately said on seeing a picture I took of it...that's from an I Love Lucy episode.
It seems to work fine, even if a bit cheesy. I'd say it would be good for anyone as long as a) you don't use the junk chair they give you with it and b) you are not a big person. I'm 5'4, 133lbs woman. I'd think a taller/bigger person would want the X-large one.
It's only been four treatments so far, but I'm hopeful I'm getting out more mercury.