MTH 260E Tinplate Christmas set

MTH came out with the 260E Tinplate Christmas set in their 2007 ready to run catalog and is showcasing it again this year in their 2008 catalog. I have their 384 standard set, and was wondering how the 260E Tinplate Christmas set O gauge set runs? In other words how many cars can this set pull, Since add-ons are being issued, and how are the Proto 2 sounds in the set, and was wondering if anyone had this set and what they thought of it?

Thanks in advance,

Joe G