Reddit mentions of Lux TX9000TS Touch Screen Seven-Day Programmable Thermostat

I so very much want to justify purchasing these for the two A/C units in our house, but the truth is that it would probably result in very little cost savings compared to the programmable thermostats we currently have, at $68 a pop on Amazon.

Looked purely in terms of of cost savings, the only advantages I can see the Nest has over the conventional programmable thermostat are:

1. Able to change temperature remotely, so if you're away for a while (e.g. on vacation) and don't remember to change your settings, you can still do so from remote
   
   
2. Sensing your absence, so it can automatically shut off when you haven't been around a while, though this is less useful if your thermostat is in a place you don't usually pass by in your daily living
   
   Of course, aside from a purely cost savings point of view, there's advantages like convenience of programming (learning vs. punching in settings for every day), seeing your usage history, and, of course, coolness factor. But, looking at the cost savings point of view, it's hard to see how much the above advantages would add up to ($250 2 thermostats) - ($68 2 thermostats) = $364 in savings when the programmable thermostat is already reducing my energy usage a good amount.
   
   It's somewhat similar to hybrid cars, where the premium you pay for a hybrid often outweighs the cost savings from less gas over the lifetime over the car. Has anyone switched from a regular programmable thermostat to the Nest and noted significantly reduced energy usage? As I said, I'm just itching to get these, but so far it just doesn't seem like a good investment over what I have now.

Oh, awesome, thank you! I have a lux tx9000ts.

Just out of curiosity, is there one that has a Wifi connection that goes up to 99°?