Need A New Small Tank? Fluval Edge, Spec Or Something Else?

[Le Sorcier]

Hi all,
 
I need a new small tank 20-30l and love the look of the Fluval tanks? 
 
The Edge 46l looks too awkward with the small opening at the top so I have been looking at the spec and the Edge 23l?
 
Anyone with any experience of these would be great or any viable alternatives?
 
Thanks