I have tried, Firestorm, Nirans, Dolphin, Catznip, Singularity and Exodus but they are not what I want, I want a viewer that runs smooth and you can take good pictures with and I want to be able to customize it, Nirans was good but...every time I logged in the whole place would keep flashing, it would stay still then 3 seconds later it would all flash and come back, please tell me what is the best one! I am using Nirans Viewer now, and it is great.