Hey Mate,
Welcome to Theory11!
All of the above effects do require a gimmick, though they are all fairly easy to handle.
Out of the Three Above I personally would suggest Distortion.
The Handling within the DVD is great, and the gimmick itself is pretty easy to handle and 'dump' so to speak.
TNR is a great effect, but no offence to Mathieu not one of my favourite Torn and Restored effects, if you are looking for a T&R I would recommend the T&R Project/FiTH by Huron Low, or even Torn by Garcia.
Exile is one that I honestly wont be performing, as it isnt really my style but once again it is very clever. People have suggested it is quiet gimmicky, and I guess you could say that it is, but it is also pretty simple to handle.
Simply put, if you have to choose between those three effects I would go with Distortion.
Remember though that though Theory11 is a great site, and has many great effects, dont just limit yourself to Theory11, and E products!
Thanks,
Matty