I think to compare to Iphone 6s with Iphone SE . SE is much better than 6s. Is there anything special in 3d touch in daily use I dont feel its worth.
Front facing camera maximum same to see. in deapth small change, Better battery . iPhone 6s superb but people who like one hand operations best buy Iphone SE. Phone Se is Mixture of iphone 5s And Iphone 6s.