I had the nano, it sits between and extreme and an slx imo. It is stronger than an extreme, mine lasted over a year before section 1 snapped but then again its not as light as an extreme so if you want the ultimate in weight this isnt it. The gardiner clamps are better but the nano arent bad once it beds in.
Ive had 2 extremes, 1 pole snapped after 6 weeks the other 7 months. Currently im using an slx because i cant bring myself to fork out another 6 or 700 quid just yet. I think though i`ll go back to extreme it is the better pole at a cost.
I still have a nano in the van with a snapped top section, nearly 200 quid to replace the section thats why its been abandoned lol