Teachu2, like you I really needed a locking diff or a 4wd mower. Safety was my biggest motivator, going down hills out of control and being able to go up hills on some days while other days I would loose traction and slide back down. I have a CUT and side by side so this was only going to be used for mowing. I was seriously looking at the Husky R322T 4wd mower. With it's price range came a whole new set of options. Until then I really hadn't thought about the X570. That's what lead me to look around in the used market. I can't say I was looking specifically at the GT48DXLS at first, Husqvarna has several models with locking diffs but only a couple that also have the fabricated deck (Something I wanted). The YT line seamed kind of lower end with it's smaller wheels which left only the GT48DXLS (at least that's what the dealer I talked to said). The only one he had was sold so I could look it over but not even try it and didn't think he was going to get another. I might have waited another year but the dealer wasn't sure if Husky was going to have it in their lineup next year (another reason why I started looking at other options). I notice Husqvarna no longer lists the GT48DXLS on their website. In the past when I got to spending over $5k to just mow I shelved the idea. Had I not found a used X500 with low hours I probably would have waited until next year.
We went with the Husqvarna R322T AWD, we actually have two R322T machine's.
My wife helps me with the mowing, and we only use the R322Ts for mowing.
Much of our property has slopes and the R322T has worked out much better than our previous
2 wd Wheel Horse riding mowers.
The AWD is a huge advantage on slopes.
Another plus is the front mount deck, it flips up easily to clean out built-up grass clippings or changing blades.
Articulating steering for tight and easy maneuvering around objects is another benefit.
We both love our R322Ts and will never go back to traditional riding mowers, with mid mount mowing decks.