No, Its not that inferior!
The way i look at this is this.
Levelflex is a rolls royce, meaning its far to good and it out performs against most other levellers. however, it could be a BMW......so thats where Flexilevel is.
A bit similar to the way we look at Green star, Blue Star and White Star i suppose?
Only thing is, it does sound good and does all things Levelflex can do but with less ingredients..... not sure i'm completely comfortable with that. I'll give it a go though on a downstairs utility or something if it's a good price. Just need to find a stockist down here now!
Cheers mate