Hi folks. I am not really a US train fan, but I recently decided to purchase an F7. I remembered the fun of owing it. It was my first train set that my parents gave me when I was 7 years old. This was an F7 in warbonnet paint scheme, a tank car and a caboose - it was an absolute pleasure. So which one in this scale is better in terms of prototypical accuracy? Do I get it right that AZL option is better (more prototypicall proportions) and as a matter of fact is possible right now as MTL units are not in stock? Also seeing those prices, it makes me feel sad that you can purchase Kato AB units in N scale for the same amount of money as AZL A unit.