I've got an AquaVu Micro Plus and have been very happy with it. In my opinion one of the major bonuses is that the IR lights are on a manual switch, so you can control them. I didn't go with the AquaVu 5c because it has auto-light sensing IR lights and where I live we have a lot of stained water so I wanted to make sure I could still see and not get the "brights in a snow storm effect" in the stained water.

...also to save some cash check out the Reconditioned units Aqua-Vu sells on their site, they come with the same factory warranty