One other big difference, in my experience but also heard the same from others, is that caffeine makes it hard to sleep (like cocaine, etc.) whereas modafinil doesn't, it just makes you not think about the fact that you need to sleep. If you take modafinil too close to when you decide to go to bed you'll be able to go straight to sleep, even if the effects of the drug only just kicked in, which is very different to going to bed after drinking a couple of coffees or taking some coke, or other stimulants. (Of course, YMMV.)
By the way, what is 'coke mouth' - just a numb feeling? I've never felt anything from taking modafinil (though never used particularly high doses, or used particularly often). Don't know if 'coke mouth' is something else that I've never experienced?
Ah yes I forgot to mention the sleeping.
I've also been able to get great effects (in terms of 'recovery') by taking modafinil before bed if I only have between 1-3 hours available to sleep, then getting up and having a good productive 18 hour day. Although I dream a lot more, but I consider that a bonus.
Haha 'coke mouth' is overly chatty, will speak at length about anything. Sorry for the lingo
By the way, what is 'coke mouth' - just a numb feeling? I've never felt anything from taking modafinil (though never used particularly high doses, or used particularly often). Don't know if 'coke mouth' is something else that I've never experienced?