Used to pull maybe 300-4000 lb heavy logs into a trailer. Never strained.
Two issues are minor detractors on quality. Motor draws about 70 amps at zero load, so about 1 HP just to idle. Around 250amps peak in my work.
The rope end fastening rope to take-up reel has sharp edges that look like they could easily damage the polyester rope. Other than this issue, greatly prefer the poly rope over wire cable.
Haven't used it enough to make any comments on durability.