I have an LX2610 with the leveling kit. I had my tractor for a few weeks before the kit came in, so I was able to use it with and without.
If I had to do it again, I would definitely get the leveling kit. I like it a lot.
Yes, it does reduce the curl function and it took me a bit to get use to it.
As for lifting capacity, I don’t think it reduces it. I believe Messicks did a video on it and found no change
It’s great for pallets, I move IBC totes filled with firewood. And I like it on the bucket feature too. It prevents stupid mistakes like throwing crap on the hood when you raise the boom.
Not to mention when other people are using the tractor and they aren’t being as careful with things.
Even when I’m using my grapple, if I have something grabbed, raising the boom won’t change the angle of the contents, I find it useful when I’m clearing piles of brush or long branches.