I can only speak about my experience with Wellbutrin (i'm still on it)
First few weeks felt "wired" ... then that went away.
As for specific things i've noticed:
After taking my daily dose, the room feels a bit "brighter"
I am less socially sensitive to how people treat me- i dont dwell on it
I don't dwell on negative thoughts the entire day like i used to
I have a better mindset like "it'll all work out" even if I have nothing going for me lol
I am less irritable and get along with my girlfriend a lot better and havent fought with her at all since starting on wellbutrin. Infact, I am now the "calm stable" one. Which is the way it should be.
As for bad things,
I am less motivated for some reason. It feels like weeks have gone by (for example the entire month of November) and i haven't accomplished anything. I take my Wellbutrin, and I feel OK, and i end up doing nothing the entire day. I should be looking for jobs, but I can't seem to be bothered. I've lost my creativity and motivation it seems.
Also weight loss, and some anxiety in certain situations.
Hope that helps!!