2010 String Trimmer Report
My $.02 - I purchased a Troybilt 6 hp walk behind in 2004 and as far as I can tell, it is identical to the DR unit but it was $200 less. I used it for 6 years to trim grass on 1 acre of rocky uneven terrain around the house until the clutch-pulley bracket broke in half. Otherwise, it was a great little machine. The engine still runs. I need to search for a new bracket and fix it if I can.
Meanwhile, I went shopping for a newer unit. Troybilt no longer sells one but I found a Swisher at the local Big Box store. It appears to have the same identical 6.25 hp Briggs and Stratton that is on the Troybilt. Looked reasonable, so I took it home. If you are so inclined, I will recommend that you not bother. Here's what's wrong with the Swisher:
1. The rock guard is plastic, not metal. In first use, small pebbles thrown up pretty much disintegrate the sides of it. Might as well not even have a guard.
2. Unlike the Troybilt/DR designs, there is no clutch pulley. It is a direct drive belt. Therefore, the "engage" bar does not activate a clutch, rather it allows the engine to run or not run. You can't start the engine without gripping the engage bar and you can't let it idle when you need to let go of the bar and move something that is in the way.
3. The string attach is a very poor design. It doesn't matter how you tie the string, or what size string you use, the metal loop is too large and you're going to lose the string long before it wears out. Replacing strings is a constant nuisance.
My neighbor bought a Sears unit and is very happy with it. Get that, or get a DR, but avoid Swisher if you can. Pics below show worthless plastic rock guard and string attach of Swisher. The much superior Troybilt string attach is shown for comparison.