IPhone 5S Users: Is the iPhone 5S still a good phone to buy?

PS: Do you know anyone who has an iPhone 6S or even a 6S plus? How does the speed differ? Is there a noticeable speed difference?

The 5s is the most popular iphone out there and the 6s is noticeably faster. If you don't like big screens then I'd recommend the 5s but if you want a bigger and faster phone with force touch or just want to burn your wallet into smithereens then buy the 6s but I won't recommend the 6s+ because even if Apple guaranteed a bend proof phone the 6s+ is just thin and big which to me is very prone to bending (and also an otterbox case its very trust worthy and prevents bending and also is shockproof, dust proof and scratch proof)

Yes there would be a notable speed difference between the 5s & 6s/6s Plus.

The 5s is not the most popular iPhone. Don't know where that info came from.

The 5s is fine enough if you can't get the 6s for whatever reason though.

Also don't worry about bending with either the 6s/6s Plus since Apple uses 7000 series aluminium on them which eliminated the issue.

I use iPhone 5 and find it a decent phone for everyday use. Well, I assume that the iPhone 5s is even better since it has a better processor.

I just sold my last iphone on craigslist because I bought 6S. Iphone 5S was a great phone though, never had 1 issue with it ever and the person that bought mine got a great deal because it was in great condition.