I guess I'm one of the few coffee snobs on the boards. I don't like to drink coffee that old either. I have a thermal coffeepot and I truly love it, but there is no carafe I have ever found that keeps coffee FRESH for that long. Hot is one thing, fresh tasting is quite another.
Please don't get me wrong, I'm a mom so I have had coffee that has been reheated in the microwave so many times it has ceased to actually BE coffee I think. But if you are going to talk about flavour in coffee, then truly you do need to make fresh. Coffee aficionados will tell you that coffee loses its freshness after 20 minutes, let alone 2-4 hours.
If hot is your issue, then I'd like to reiterate the advice above . Just make sure you heat your thermos/carafe with boiling water before the coffee goes in and it will stay nice and toasty for a long time. A really good seal will go a long way to preserving both heat and freshness as well.
You're only given a little spark of madness. You mustn't lose it. Robin Williams