Personally, I don't really have a 'favorite' mod as I have far to many and they tend to fall into different use patterns.
There are two different ones that I keep on my night stand, three different ones that I'll choose to take one in the car with me while I'm out running errands, the ones I use while surfing the web and drinking my morning coffee and lastly the ones I use while watching TV (hint: my profile photo is my right hand selection, I don't have a image of what I have available on my left).
g.