I remember when Polene first launched the Un..I absolutly loved the style but knew this bag is way too big for me. When the Nano came out, I bought one when they first launched and never regretted it.
You would be advised to take the plunge at some point because Polene seems to increase prices over time!

If I didn't have any bags from Polene (I got the nano, micro, huit and beri), I think I would get the tonca!