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hello, I am looking for your help to decide which bike I should choose for my son. He is 5ft. I was looking at 20" bikes up too $500, but not too many options with 19-20.25TT. Also bikes doesn't have all sealed bearing, not full chromoly. 20.5TT I found more options, but I think he is too small for it.
https://www.danscomp.com/products-BIKES/102675/2016_Premium_Solo_Bike.html ----20TT, only this one with all sealed bearings, but some say that Premium are not a quality bikes
https://www.danscomp.com/products-BIKES/102709/2016_Fit_Pledge_Bike.html ----20TT
https://www.danscomp.com/products-BIKES/102646/2016_United_Supreme_Bike.html -----20.25TT
https://www.danscomp.com/products-BIKES/102597/2016_Verde_Eon_Bike.html ------20.25TT
https://www.danscomp.com/products-BIKES/102631/2016_We_The_People_Curse_Bike.html ----20.25TT
http://www.vitalbmx.com/product/guide/Bikes,6/Eastern-Bikes/Enso,9715 ---19TT
Any ideas?