If you want something free then you opt to go for Unf ( not advertising my own hack ), it works through patches easily and the only thing that slightly breaks on it rarely is the autoloot ( working on that ) and it is about to get a update aswell.
If you want something small/compact and just for the ESP aspect and radar, then you'd go for the Mini ESP addon for Unf that has no compatibility issues with win8 users ( unless they are not setup properly ) and no problems with an overlay because it doesn't use one and lastly it has more features being added to it over time and hardly ever breaks on an update if ever and if it does I usually update it within 15-30 minutes.
If you want something that has everything Unf has but also being able to teleport, taking from trading post and a light weight version of just the nametag esp, then go for Midnight. The ban risk for teleporting is obviously high and to be used at your own risk.
If you want a very sluggish overlayed program that has everything midnight has but also a radar and some other eye candy useless features with no support for windows 8 and breaking upon every update with a very long update at times for it, go for Aurora.
If your looking for all of the above minus the taking from trading post but in an overlayed format that has no lag/hiccups and also a bot with an open lua scripting setup and tons and tons of tech support with very fast updates, go for Minion.
Choose wisely and remember, you abuse what you choose you only have yourself to blame when the ban hammer happens.