The best thing for all in one is called an Accurite. It is digital and can be found at most any walmart, target, sears, etc. A lot of people have trouble locating it, but I've always been able to find it with the outdoor thermometers.
Now thermostats are up for huge debate. Some people swear by Spider robotics, but they are VERY expensive. There is apparently a decent one some people can find on amazon, with a fairly reasonable price tag. But it's name escapes me. You can of course opt for the cheap petco/petsmart one made by zilla, but you do get what you pay for and they are known to malfunction. I have three, and while two are rock solid, the third has it's moments and we watch it like a hawk while we save up for better ones.
Gale