Jane Exo versus Jane Exo Basic - what's the difference & are either any good?

[EugenesAxe]

I've read some good reviews of the Jane Exo but the Jane Exo Basic is cheaper.

Does anyone know the difference? If it's one or two of the 'amazing patents' then I don't know if I'm bothered. The Exo Basic is lighter, which seemed to be a bugbear about the Exo.

If you have one I'd be grateful to hear your feedback on the seat. I wanted a good Isofix, is all.