Teleport > Ignore Hight.
Teleport has all the advantages of Ignore Hight, with the option of gambling on top of that. And it illuminates the entire deep dungeon, which is kind of nice on your first few trips to a level.
(For anyone who doesn't know, with teleport you have 100% chance of success within your regular move range, and -10% success for any panel you move further. ie if you have move of 4 and try to go 6 panels away you have a 80% chance of success.)