both cameras give good results - comparable results with little difference
d3200 is a bit smaller ; has 24mpx - latest toy in market
d5100 is a bit old - but nice 16mpx sensor - same as d7000 and articulated screen which enhances creativity
d5100 has a stop advantage over d3200 when it comes to noise - but if u shoot equal videos - go for d3200
buy a 35mm f1.8 for low light


