Then one day ALFA came out with the Guard GTX. Game changing? No, much more than this... life changing.
I sold all my NNN boots. All my XCelerators bindings are lost in a closet. The Alfa Guards make NNN completely obsolete. Why the hell bother with 500g floppy and crappy 500$ NNN racing boots when you can have the Guards at only 725g and have all the control you will ever need for just a few more grams...?
Personally, NNN died the day the Alfa Guards came out. All my super-skinnies are now NNN-BC, including the MR48... Of course I'm not racing and never will... But for me, NNN is now pointless* for recreational use...

* That said, Xcelerators are THE most awesome bindings on the market for so many reasons. The world absolutely needs a XCL-BC binding instead of all those crappy ideas flying around...