It really depends on the type of cut you want.What Collinsmaple said was all true. I bought a cheap bush hog about ten years ago with the intention of "spending it" on a piece of land we bought that had a lot of juniper covering the rocks. Aside from welding on a few patches and straightening a few things its still going and it has vaporized plenty of "taters". The thing I dont like about them is if your ground is uneven its a real pain to follow the contour. If you're just looking to keep things open though its the tool for the job. Mine is like one of those kingcutters at TSC.
Sean
2013-1st year...94 taps, 12x24 sugarhouse, home built evap. Gast 2065 pump with bender
releaser.
2014-30x36 sugarhouse, 2.5x10 "Jutras" evaporator, 1200+ taps on vacuum, sap brothers RO. 2 sihi 2 stage pumps, 440 gal.
2015- 1000gph memtek RO, 3250 Taps, 1200 gallons
2016- Modified grimm 4'x12' evaporator with auf and aof with air preheater. Home built airtight arch front. 4250 taps?
2017- 2400gph. Lapierre RO, 10" filter press, 5000 taps