Someone on this forum repeatedly claimed that the iPhone (5S version, I think) was the best phone on the market because it offered the most "computing power per unit volume" of any smart phone at the time. This is probably true of the 5SE today, as it has a fast processor in a small case (with small volume), thanks to the very small screen.
Maybe the OP also uses the "computing power per unit volume" metric when selecting a smart phone.