What are the largest LEGO® Power train sets available commercially [Oct 2014] What set(s) are the largest by number of pieces? These sets could be retired or existing.

I am also curious what set(s) have the most rails pieces included.
Right now, the largest commercially available train is the Lego City Cargo Train, Set 60052. It comes in at about 887 pieces. There are 30 rail pieces in this kit. Extra rail pieces are also commercially available through Lego. The 7898-1 cargo train would come in second as far as piece count. Same amount of track as the 60052.