I have a MF 1455-4. That on the larger end of the spectrum for the 1400 series. Its 55HP, mine is equipped with 4wd, a 16x16 shuttle box, front end loader, and rear class I 3pt. I love it to death. On the rear I generally use a 72" rough cut mower, 72" box scraper, or 96" rake. It also gets hooked up to the manure spreader about once a month or so. I also have a 12" post hole digger, but havent used it since all the fence is now up.
I needed the 4wd as the rear pasture has a swamp in it, and can get quite soft. When I went shopping for one. I did not want a hydrostat, and it had to be 4wd with a 72" front end loader, and I wanted the 4cyl diesel. While I only have 6 horses right now, my tractor has the capacity to handle the farm I want in the future. I own 26 acres, and it does everything I want it to. I would like to add a rear backhoe in the future.
I have never had a problem with it. I change the oil, and filters every 100 hours. Never a leak or drip. I did add a block heater to it, to make it easier to start in the winter, as I store it under a lean-to. I havent had it stuck yet, it has plenty of low end grunt, and feels like it will pull a house down.
It was a toss up between this, a New Holland or a Deere. I got a better deal on the MF, and the dealer was close by. Plus, my wife thinks its sexy. Hope that helps.