Hi all, I need some help in picking out a train for around the Christmas tree. I tried HO last year and it got lost under the tree so this year I am looking at an O scale circle. My question is what to go with. I have been looking at an MTH PRR passenger set or the Lionel Polar Express and was wondering if there are any major technical differences that would justify the difference in price. The choice of PRR or the movie is one I have to figure out on my own. Typically I model HO and are not sure of the technical merits of the two manufacturers and other things that I have to watch out for. Your help is greatly appreciated.