I have an R4047H, and have to say that my experience has been different than Agilly's. I'm at something over 135hrs now, and it's never done anything wrong. Wait, I take that back...I lost one of the rubber HST pedal covers a while back! I pulled the other cover off, and put skate tape on both pedals, which I like better...not slippery when wet. I'm running a heavy 6' Rhino rotary cutter, and absolutely want to move up to a 7' model. I hardly know that the 6' cutter is there (800lbs or so), and the tractor easily powers it through the pretty heavy stuff that I've been clearing. Also, I can run mine all day on roughly a half a tank....I haven't timed it to the hour while brush hogging, but it's never been an issue. The tank is actually on the small side (9.5gal) for a tractor this big, so I don't think the usage is all that high. I did break a sway bar, but it was totally my fault...turned, and the mower moved sideways into a stump...and it was a sharp hit. I cut the bent part out of the sway bar, welded the halves back together, and it's still going strong. I bought a replacement set for less than $100 so that I would have a spare for both sides, just in case. I don't like the pin they use in the sway bars, so I put grade 8 bolts in mine.
There are only a couple of things I would change, and none are deal breakers for me. I'd like the loader to go higher than it does....some competitive models offer 10" or so more lift. I can just barely load a 30yd roll off dumpster, and that extra height would be handy. I would add some foot space in the operator's station, or at least find a way to make more of a pathway between the fender and the brake pedals. I'd probably increase the fuel tank to 15gal or so. Oh, I'd make the cup holder a little smaller, or add an insert since my water, or gatorade bottle wobble around too much
That's really it...I'd buy another LS in a heartbeat.