OK, Heres an opinion on Mirror back,, I have a 29 gallon mirror back tank, They are called show tanks in petshops. I have 2 false percs, Royal Grama, LM Belnny and yellow goby. I have not had any of them give a second look at it, Except for when the pair of Clowns got put in. And that was only for a couple of days.
You also have to figure that eventualy it will be covered with Coraline Algea anyway.
I like it because you can see whats going on in the back of your tank, It also lets more light get to the bottom of the tank, Caves are not as dark towards the back. It's easyer to find lost fish.
The drawbacks on it are, As you can see in the last 2 pics and it shows up every little bit of Algea growing on it. But it you keep just the top part scraped off like I do its not that bad. and also you have to watch the pics you take with the flash on, Most of what I take is with flash off. and watch the angle.