I've got one on a Bandido II uMax. Compared to the stock brown donut coil:
1) It's noticeably heavier, but still not enough to worry about. Still balances well.
2) It's a little deeper in my red soil. Maybe 1.25 inch on a dime?
3) It's harder to pinpoint shallow targets with. This is due to the long search field, to be expected.. But it still pinpoints in the middle on targets not close to the surface, which is nice. Just raise the coil or "X" the target.
4) The coil cover fits loose and doesn't want to stay on.
5) It loves bottlecaps and calling them coins. But this has been the case with all the widescan coils...
Some other points:
1) Doesn't float, so very good for shallow water hunting.
2) Very sturdy and well made, other than the coil cover.
It probably won't be my main coil, the stock coil will keep that title. But for more open areas with less modern aluminum trash and screwcaps, It will be a great choice. But for sifting through thick nails and modern trash, the concentric is tough to beat. I'm not blown away and amazed by the coil, but I think it's a great coil to have on hand and I like it.