I agree with Ral Inn, the 12m switchblade and the 10m bandit dos would be a closer match in power range but the kites are 2 completely different things. The dos is a high performance machine that is super fast and powerfull for its size and can be intimidating for timid riders where as the cab is a bit smoother easy to ride with lots of depower but can take a bit of tecnique to get the most out of it. The cab is a easyer kite to unhook on as it doesnt seem to pull your arms as aggresively as the bandit and it is a lot less twitchy. The cab also loops better with a smooth consistent pull.
So if you want a easy to live with kite get the cab, but if you want a kite that will push you to your limits get the Dos.
If you really love your 14m nemi go for the 9m Bandit for the best range or you may never use it again. even the 9m has a super grunty bottom end you would find yourself grabing it from 15kts and having a ball.
Definatly try one of each to see what you like before you buy.