I like the iLok system, it definitely is the most convenient. having all your licenses from different manufactures together is the way to go.
I would like to see options to having a USB key, such as monthly logins so i didn't need to worry about potentially breaking an iLok and having to go through the hassle of sending it away and dealing with those consequences.
As a sometimes laptop user this is a factor in my personal purchases, however in a dedicated studio facility the USB Key is hard to beat.