I have worn these shoes during CrossFit for about 2 months and unfortunately they have not worked out for me.

I just received a pair of Nano 2.0's and the difference in shoes is apparent after the first time wearing them. First, the toe box is too narrow in the MX20v2 and because of this my feet hurt almost immediately when performing box jumps and jumping rope. The shoes are well made which is what I would expect from NB. The shoes are also $30-$40 cheaper than the Nano however the Nano is definitely worth the extra cost IMO. Overall the shoe just didn't work for me but that may be a product of my feet more than the shoe. I prefer something with a wider toe box and a bit more padding.