The Big Boys were the best. Always have been my favorite.
I’ve seen six of the eight preserved 4000s. The only two I haven’t seen in person are in Dallas and Green Bay.
I’ve shot video, made audio recordings and/or have ridden behind all the “big” excursion steam in the last 20 years including UP 844+3985, N&W 611+1218, SP 4449+2472, Frisco 1522, SSW 819, MLW 261, C&O 614 etc.