LGB trains for around Christmas tree

LGB trains is top notch, my dad has been collecting them since 1982. If you can find them they have a very nice Christmas train set (difficult to find). The track is great, if it gets dirty you can clean it with a piece of drywall sanding paper, (no need for the expensive track cleaners).
If you have the time, check you local papers and see if there is a Toy train show in your area, generally you can pick up very nice sets at very decent prices.