Two comments on the Critical, one not a big deal, the other is although easily corrected.

1) It's a track style frame with rear track ends, not drop outs. Horizontal dropouts open to the front are far more user friendly although you cannot put chain tensioners on.

2) It comes with only a rear brake. Rear brakes are more hassle and have 1/3 the stopping power of any decent front brakes. All the parts are there to convert it to a front brake except a longer bolt or nut to go through the fork crown. Riding a rear brake only bike in the city is like driving Germany's autobahns fast with cable operated drum brakes from the '40s.

I know nothing more about this bike. Maybe the Amazon ad is a lie. (Hopefully)

Ben