I'm kind of confused about this situation. You're disappointed you can't the the top-of-the-line Windows device, so you're going to get NO Windows device at all? I don't see how that makes the situation better.
Also, 2-year agreements on AT&T are a pile of crap. They've set it up so AT&T Next is a much better pricing value. I don't know your work plan's setup, so the numbers might be different. For me, we're on a 15 GB shared plan. By being on Next, each line gets $25/month off the bill. I got the 950 on AT&T 12 because of this. The phone is $29.99/month, but I get $25/month off the bill, so I'm effectively paying $4.99/month. By going with the 950 on Next, the bill has gone up $5/month. Over that 12-month period, I'll have paid $60 extra (vs. staying with an off-contract phone), and I have to turn in the 950 if I upgrade before 20 months are up.
Had I gone with the 2-year agreement, I would have lost the $25/month discount. The bill would have gone up $25/month, rather than $5/month. I would have also been paying $150 for the 950 on-contract, and I'd have had to pay that $25/month for 2 years. Over a 12-month period, that's $150 for the phone and $300 for the bill increase. That lets me keep the phone down the line, but it's $450 in the first year, vs. $60 on Next.
Like you keep saying, we don't know your plan with your work. We can't assess what you won't tell us. I took the same stance as you--that off-contract purchases just weren't financially responsible, and switching networks was logistically irrational. Still, you're being way too combative and flaunting "I know what my situation is" arrogantly, while refusing to give us that information and ask us to give you information on the situation you won't tell us about. It's insane.
At this point in the AT&T pricing structure, it's possible that your unlimited plan is screwing you. It's locking you into overpriced 2-year contracts and tying you down to a phone for 2 years. IDK what your plan is, maybe that's the cheapest route. However, an AT&T Next plan with enough data to cover you (they have a 25 GB/month option) MIGHT be cheaper than what you're living on, when factoring in your increased phone payments and lack of freedom in switching phones. Not saying it is, but it's possible, and without your willingness to tell us what your situation actually is, no one can help you for a second.