To Go Cube or Rectangle

I'm getting ready to give the house a facelift and part of that provides me an opportunity to get a larger display tank (120-150 gallons). We plan on putting it against a wall with all the equipment behind it in another room. The display tank will set on a nice table and all the plumbing and electrical will be concealed under it and run behind to the other room which will house the sump, skimmer, etc.

I am partial to a cube with low iron glass and a center overflow box.

I am looking to those here with more experience than I (just about everybody) to provide some information on the pros and cons of going cube v. rectangular tank and possibly give me some ideas on what will make the most attractive display tank without encountering setup and maintenance issues. 

I'm a bit away from getting it (maybe as much as a year out), but would like some input and advice.

Thanks,
Fat

I really like the idea of having a room behind the display Tank and hiding as much of the filtration components of the Tank, it helps to keep noise down as well.
One of my dream tanks is a huge Cube in the center of the room, where i can have four viewing sides. I think that if you do a Tank like that against a wall is going to be a waste of space in your Tank and a waste of money. Also think of how difficult it is going to be to aquascape it, get the Light in the right position, you will have to add extra fixtures just to get it illuminated, all because of the center overflow.
I would suggest to place the overflow in the center of the panel against the wall, if the tank will have an equipment room. This will help you with plumbing, aquascape, light, flow, head loss, just to name a few. There are also a few things to consider with an overflow placed in that spot. Its hard to get to it if the front of the tank is more than 24 inches apart.
Maybe take some time to visit members homes and ask questions about their tanks, what they love about their set up and if there is something they wouldve done different. I know there is no right or wrong way to do it, what works for some people wont work for others.
You are welcome to come see my tanks, I currently have a cube and a rectangle. Dont hesitate to ask questions.