The reason the Gillette Fatboy is in such demand, and especially since everyone seems to pay a bit more attention to them than the slim, was that it was the 1st adjustable of Gillette, starting out in 1958 and only continuing in that style of handle until 1961, where the transitioni to the slim adjustable was made. I have 2 and they work extrodinarily well. Geofatboy on youtube.com has commented that he likes the Fatboy as one that is very hard to beat. It has adjustments from 1 to 9 positions, and a unique turn knob as well as a different knurling on the adjusment dial. There were a few made with a toggle, being a flip-like end piece that worked the silo doors as the TTO mechanism did, and there was just a few made with the adjustment made at the bottom of the handle rather than the top. Those last few are really sought out by collectors and can seemingly always demand a high price. I have watched, also, the Super Adjustables and Slim Adjustables being touted as "Fatboy" by unknowing or otherwise unscrupulous sellers "playing" off the popularity of the "Fatboys".

I really enjoy mine, but I also enjoy the Slim Adjustables, the Super Adjustables, the 1980 series black handles adjusables as well.