iPhone/iPod Touch: APT installers

[psperson]

it would be great if you had an episode about APT installers for jailbroken iDevices. the 3 most popular ones that i have seen are: Cydia (almost everyone's default), Icy (from the people who made installer, ripdev) and Rock (the newbie from RockYourPhone.com). i know there are others, but i have not heard of any others. i personally like Rock the most. its fast, and it is aesthetically pleasing.