I'm needing some info on the 680 front mount z-track. Anyone use one of these machines? I'm a solo operater looking for one mower to go with my 21" Honda. How much better would the trimibility be compared to a Lazer HP? On uneven terain would the 48" deck cut cleaner than the 54" or the 52" on the Lazer HP? I have demoed a Lazer HP 48" 20hp. Not much offset. Sweet machine. Felt alittle scary on the hills. I live on Kauai so I can not test the JD F680 in person. Is it good on hills? My accounts are tightly landscaped with some hills and rolling terrain to flat open acreage. I mulch when ever I can. How does the 7 Iron deck mulch? Needing some opinions for the final purchase.