I replaced my 4600: 460FEL/48BH with a 110TLB. The 110 is the commercial entry level machine, that's the best way I can think of to describe it. Off the top of my head I'm guessing the machine is about 1000lbs. heavier overall. The hoe controls are much sturdier and both the FEL and BH have aux ports. The machine has a nice "creep to position" control which is accesible from either position. The "quick-Tach" mount on the front is great, you can use any S.S. attachment with ease. Overall I am happy with the machines performance, it has almost the same "rip-out" force up front as my 320 S.S. had!!! The self leveling bucket up front is a real nice added feature. I'd really like to have a 310SG but, several factors prohibit this purchase: 1. wife says no to 75K price tag. 2. haul weight of almost 17K too much. 3. my landscape business won't support such a machine