I hate the monorail at EWR with a passion - the slow speed, the long stop at a parking garage before the terminal, the insane loop round some kind of junkyard/parking lot it takes on the way to the railroad station, but all told it's still only about 10 minutes at worst.
They have one of those at SFO also and it's not exactly fast. That said, it's a big improvement over the prior shuttle bus to the rental car center--though the BART connection I usually just take that if I'm going into the city in the vicinity of the convention center.
The one at SFO is pretty standard. What's irritating about the one at EWR is that it's so unecessary. The loop seems like it's there because they couldn't get somebody to accept the supporting pillars in their precious car yard, and the general speed is a bit less impressive than the monorail to the space needle in Seattle.
