In my opinion you should not get an IPhone SE unless you have an older model than 5S. Guys who have 5S might be saying it is so much powerful etc. Reality is that you should make the switch only if you have money laying around and you want to be the coolest kid on the block.
5S vs SE
Design-wise they are awfully similar. Display is the same. Camera is better (from 6S). More RAM memory, more powerful processor – but that does not mean 5S has been classified as old and slow, on the contrary – it is still smooth enough.
|iPhone SE||iPhone 5s|
|Resolution||1,136 x 640 (326ppi)||1,136 x 640 (326ppi)|
|Processor||Apple A9||Apple A7|
|Rear camera||12MP, f/2.2, phase-detect autofocus, sapphire crystal lens cover||8MP, f/2.2, contrast-detect autofocus|
|Extra features||Touch ID fingerprint sensor||Touch ID fingerprint sensor|
As I see it, only real reason to get SE is if you have 6, 6S(/Plus) and would like to get a smaller phone you can use with one hand.