First of all, don't go for Sony light (with all due respect to anyone who loves it

, don't get angry at me). I have bought it and then I bought verilux. Sony light doesn't come even close in comparison. Verilux is so much ahead!
The main drawback is that if you want to avoid glare from a screen you have to position it on the reader's side and its light is too weak to lit a whole screen evenly, it is too deem and my eyes would get tired in 15 minutes after using it.
Verdict: Unacceptable because the light is too weak for my eyes.
Verilux vs. Bug (I will call mighttybright a "bug" just for fan

)
My choise would be verilux.
IMHO
1. It is much smaller, compact and easier to handle than 2 antennas. Since I have sony light, which has 1 antenna and it is not bigger than Bug, I can compare them. Also, most likely it is easier to take on a trip. I have taken mine in a special small bag that comes with it, it is very convenient.
2. Bug uses 3 AAA vs. verilux 2 AA. You should choose for yourself what type of battery is more convenient for you. Probably their weight is almost the same.
3. I don't know how heavy Bug is. (Although it should not be too heavy I think, so it would not matter too much for me, but for some people it is important).
4. As someone pointed it out to me on another forum there is an insignificant or significant drawback to Bug vs verilux. It has 2 antenas that should be positioned on both sides of the reader with a certain angle towards the screen, just like it is shown on a pictures in another topic. It allows to avoid glaring effect and provides an even light across the screen which is wonderful but in my situation it would disturb my other half, because one of the antennas would always be pointing in her direction and the only reason why I needed additional lamp is to be able to read a book while my other half is blissfully sleeping next to me

Also if my other half is sleeping to the left from me I can hold the reader like a real book and fa ront cover (at right angle to the reader) completely prevents the leakage of the hateful light