This is a personal favourite of mine. In the 1960s when I was running Trix Twin 3 rail, my parents came back with a Trix Express BLS Re4/4. Because it was 3 rail, the flanges are too deep and thick for it to run on 2 rail track. I wanted one of these in 2 rail and found it on e-bay. Although it is probably over 50 years old, it still runs like a dream. Not yet converted to DCC