Why?
What do they do that a cheaper phone doesnt? Those 3 phones are profit you could be taking out of the business to put towards a house, mortgage, holiday, anything other than something that will be gone in 2-3 years.
Genuine question btw.
My Mrs always gets the latest samsung. I dont know how much it costs, but I am going with £500-1000 added on to her contract (3 year contract!).
I buy a cheap phone (£100-150)- usually a motorola. my only requirement is that it has gorilla glass so it can take a drop or 2. It lasts maybe 18 months. By the time I get my upgrade, my new cheap phone is better than her 18 month old samsung mortgage payment phone.
Also, if I break it, I am not overly bothered.