Purchase advice Heritage Softail

Hello, will separate me from my e-glide and switch to a Softail Heritage. So far only Sporty, Dyna and E-Glide have driven. I don’t know about the softails. Should a used one be from 2012 onwards, with the 103 engine. Is there something to pay particular attention to? Has something fundamental changed between the year 2012-2016? Thanks already in advance.