Go with the GRK
I got them all, and love them.
and yes, the GRK are a better deal.
but, I must admit, I have never flown the storm2, but I also have never seen one in paradise, here, in Hawaii.
Globerider on the other hand, except for me beeing the first one, I have seen other people on them. Turists I think.
I love the kites, great hangtime, huge range, very strong, simple, no fancy stuff...perfect all around kite.
Works awesome in waves as well.
Kiteloops are no problem, even with the 17.4
Hope this helps