Look close at the cameras, 15mpx and/or manual options are worth it over auto focus alone. Aside from that, one is much like another imo... half of it is case and glass. ...get some kinda camera lens protection too; cover or deepset case hole, etc.. I scratched one day 3.
Take the time, lots of it; you will use this often, and try a couple phones as all are not exactly alike as to exactly how things are organized, ...." Apps & settings & file manager" or "cache clearing"(especially browser) are what will bail you out most often early on if it's an Android.
I hope the flanges like your track brand ok....?