@Jerryc41, I know I linked this site before, but since you've decided to go with Atlas or Gargraves track, here's some layout ideas for hollow door layouts, if you are still also going that route. At least Atlas, unlike Gargraves, has a switch track for 036 curves.
30 inch wide door:
http://www.thortrains.net/marx/drlayat1.html
32 inch wide door:
http://www.thortrains.net/marx/drlayat4.html
36 inch wide door:
http://www.thortrains.net/marx/drlayat2.html
@Bill DeBrooke, Yes , but if you compare an Atlas or MTH MP-15 diesel to a K-Line version... well, the K-Line one did have a scale proportioned body. But with the compromises to the frame, it navigated 027 curves. And it came in many starter sets with 027 track, sometimes with the MARX origin 5000-series cars.
The K-Line one may have had a scale proportioned body shell (as even with a good number of Lionel postwar trains like the F-3 or GP-9), but the Atlas and MTH MP-15's are scale models. If you are a scale aficionado, the K-Line version (as many others here have written) isn't going to compare.
Also if you remember years ago, K-Line got a lot of heated criticism right here on this very forum, for labeling products "scale" on the box, when the actual product wasn't fully to scale dimensions. Not to mention the fiasco over the A-5 or the fuel tank on the SD70. Today's current "love fest" for K-Line wasn't always so evident in the past.
