I have one myself. It is outstanding on fuel I can run 8 hours on a little over a gallon of diesel in the 100 - 120 amp range welding pipe corrals. It does take a little getting used to. I have several sa200's, they practically weld by themselves compared to the 300. Rod angle is much more important with the 300. You really have to stay after it, it also has a very aggressive dig, I think. I generally run in b even with 5p rods, you will leave some hellacious wagon tracks in the d setting. It will also long arc like no machine I have ever used, when you go to pull away on a root you can't mess around, it will arc better than an inch, real easy. You have to plunge and pull pretty quick , whipping the rod away will get you in trouble if you are pipelining. Fuel savings alone would justify it if you use it alot. Like I said earlier though it will make you work the rod a little more than you may be used to.