John Deere X300 is an amazing riding mower. Too costly to send to the dealer for servicing but maintaining it myself is affordable. I brought it in 2018. I have used it for the last three years, 2018 - present (2021). Around three years is running; still, now I comfortably use it without any trouble. I have a 2-acre block yard, and I use it 3.5 hours per; so the accurate result is: (3.5 h * 4* (12 m *3 y) ) hour= 504 hours. Now 504 hours, and still I don't get any problem, so I think this mower will go on 100-200 hours more. I suppose it will reach 700 hours. Are you looking for Best John Deere Seat; John Deere Seat AM136044 X300 X300R X304 X310 X320 X324 X340 X360 X500 X520 X530 and Stens - 420-182 High Back Seat, John Deere AM131531 (Super easy to replace with high-quality) Check this. This riding mower is too good but very costly to maintain; I buy this mower for $3,199.00USD. For its high price and maintenance cost, I could have bought another riding mower from an E-commerce store. But I choose this riding mower for its high-quality working performance. But my uncle had some bad experiences with this riding mower because of his foolishness. He lives on the hills. Unfortunately, he rides this mower on hills, and he rides this mower like a bulldozer or agricultural tractor and doing heavy work. So after some days, he gets in trouble with his mower belt. The belt is damaged needs to replacement. When first time he got in trouble with its belt, then he replaces it and again does the same heavy work. So the belt replacement cost is $130. He replaced four times for $130 for each time. I advise him that; this is a light mower, this only manufactured for lawn mowing, not for bulldozer or tractor hard work. Use it for what it's manufactured for. Use at the garden to cutting the grass only. Hope that you will not get into any trouble next time.