I'm liking mine more after a few days.. and plugging two holes up. I'm actually hoping SI goes with the mini's when they come out too. It's almost too much juice in one vessel if you like to swap flavors around.
I still find filling my nano's easier though
opal I love the nanos on my 78mm ....the first few days are great....as long as the juice isn't to dark or thick.....after that im over em...I wish they were better....like you said so easy to fill