Keep regular furniture in mind as well. My 55 sits on a solid wood Buffet side bar. if you need to put tanks or other equipment under in the stand then this obviously won't work for you, but if you plan on having the equipment elsewhere or don't have a lot of equipment (like I do) it might be an alternative for you.
If you have some extra money to spend you could perhaps seek out a carpenter (cabinet maker) to build a stand for you to match the room you're puting it in. Or if you don't have extra cash but are DIY inclined you could build it yourself