Gateway also has the 4 hour lvl 20 and 30 'foods' so you don't have to keep reusing them all the time when you die or the one hours expire...plus they have better boosts.
I prefer gateway for leveling up a new character. I do seem to find more blues while questing in there.
Suggestion: don't go try and pet the infernal stallions unless you like trips to the ress pad (or can run really fast).