Less likely to leak, and the internals are a bit stronger than ARB. Much more engagement vs ARB, meaning thy more positively lock.
..... And parts availability over here is much better.
Price wise an ARB is around £1000, Ashcroft is more like £600.
If you want the sticker to out on your truck it will cost you a fair bit!
The other option is a detriot style locker in the rear, and then a locker in the front, less buttons to press