I replaced my thermostat with a Honeywell RTH7500.
I personally love a programmable thermostat in our 5er. I have it warm before I get out of bed, and cooler during the day when we are outside anyway, then warm back up before bed, then cool down to 60 when we are sleeping. In the morning, it is warm before I get up to make coffee.
This is also the same thermostat we have at home, so my DW doesn't have to learn a new one.