My logic:
I liked the VG Nano, but not the Marvel-S...
I like the IQ Tour Solid, but not the Marvel-S...
Therefore, I will like the IQ Tour Nano.
Maybe, maybe not.
The only Storm balls that I've not matched up well with lately are the Marvel-S and the Modern Marvel - which both have the same core. Maybe the Nano cover on a different symmetrical core will work well for me.