It's a great coil. I used it exclusively for 18 months. It picks through trash fairly well. If beach hunting, it's perfect. I was getting a measured 10 inches on a smaller coin. (about an inch deeper than my XS Explorer. I tested them side by side on the same target, that's why I know.)
I found that because it is bigger, you can get a bit more subtle information out of the pinpoint fade than the standard coil.
As far as the weight goes, yes it's a bit heavier. From memory, about 5 ounces (150 grams). I did buy the coil cover, but putting it on made it feel too heavy, so I didn't use it. Keep the coil as close to your feet as you feel comfortable(same applies to all coils) and change hands regularly. I do this with all my detectors and although it may feel odd at first, after a few hunts it will start to feel right. This massively reduces fatigue.
The only cravat that I would give (and this applies to the standard coil as well) is when in pinpoint, if the target seems to be a pipe, then turn through 90 degrees, detune and check the target with a side to side movement. Unfortunately with the ace, if you pick up a second target when pinpointing, then you want get an audio break till you pass over the last target.
Mick Evans.