I don't drink it...
but these are the reviews I've gathered...
Drip- weak and never hot enough even with the hotplate for the carafe
Perk- once you have the proportions and timing down, excellent.
Vac pot- superior taste and hot, especially when it's an automatic unit that turns off the churning action after a certain point (a la Sunbeam C-30 IIRC).
If smell is anything to go by, vac pot is the best and perc is maybe 2nd. Never really smell drip(i.e. Mr. Coffee) even though it's more open for "fumes" to be released. I really do love the smell. It's the taste I don't care for.
Good luck,
Chuck