Favorite Aquarium Size

I'm debating on upgrading my aquarium when I move again in the summer. Would definitely make things easier by having the other tank set up and moving over livestock, then taking my time with the other tank tear down..
In any case, what size would you recommend? I currently have a 65g that is 36" x 18" x 24" tall. With the current tank, I have trouble reaching the bottom, which acts as a huge road block to my motivation to do some maintenance. I also love having a deep (front to back) foot print for space to aquascape with plenty of tunnels for my fish and places to mount corals. I'm pretty sure I would like to upgrade to a larger tank that would be shorter but allow more floor space in the tank. I have a 29g sump that I could probably use that I custom made. However, if that were too small, its always fun making things.
So, any suggestions? Wherever I move to, I'm hoping to have plenty of space for this so I can go a little crazy, but not super crazy. I'll still be busy with homework and such so it can't be too huge to require a lot of time as daily/weekly maintenance. 
Let me know what your ideas are /DesktopModules/ActiveForums/themes/_default/emoticons/smile.gif Thanks!
Kylie

 

I was thinking a 75. Do you feel that a RR takes a way a lot of space?

 

Thanks for everyone's input. I'm still not 100% sure if I'm going to do this, just because I'll be short on money to start as it is. May just suck it up and do the move with this tank. Someone mentioned something interesting though that I could have a custom tank built. I was planning on building the stand and canopy for it anyway so that would be a fun project.