We have the RED monorail. Dear Grandmother purchased it for DS 5 (at the time) in 1999 at the Wilderness Lodge. He just HAD to have it. At the time we thought it was kind of "a bit much", but nothing compared to our current collection:
Basic Monorail
EPCOT Spaceship Earth
Contemporary
Grand Floridian
Polynessian
Switching Station
Magic Kingdom Castle
Animal Kingdom Tree of Life
Magic Kingdom Haunted Mansion
Wilderness Lodge (Lincoln Log Set)
And, plenty of extra track!
It "barely" fits under my tree this year. In fact we had to put away the Contemp. because we didn't have enough straight track. Guess we'll just have to pick up some more on our next trip in 20 days! DH has finally accepted the fact that we can't deal with it only being a "Christmas" thing. He knows he's going to have to 'somehow' add it to his 10' X 12' train layout. Or, he'll just have to build another addition for it! LOL!
Good luck with the monorail! It brings a smile to my face everytime I see it!