just my opinion.. I don't care for the reverse flows. i have only cooked on them a handful of times, Lang 84 and Meadowcreek and found them to be fuel hogs compared to my Klose offsets. Yes, they do have more even heat, i think thats what I didnt like.
I like, and use the temperature variations in the offsets. Hot spots, cooler spots, etc.. IMO, makes it more versatile. Nothing like that hot spot right next to the firebox to get a good seer going, and it takes nothing to get my klose up to 550 and then back down to 300. it took alot of effort to get that high in the lang, and then came down slower.