and to me that is the Quattro's biggest selling point. Now, if you are a very Sloooooow hunter and hunt at a snails pace, don't mind the extra weight, batteries 8 AA's only last about 15 hours if your lucky then get the Quattro. It will lock onto those deep coins, pretty accurate ID, but about worthless in trash or comp hunting. It however excels on the beach or open fields. Not my choice at all for parks, school or private yards. The lag time or target response time is slooooow.
Now, the Coinstrike has a quick response time, which equals a fast swing speed, which works perfectly at comp hunts, I just used mine at a recent comp hunt and it gave the Xterra 70 a run for it's money. It's hip mountable, uses 2 9 volt batteries and they last a good 20-25 hours. Coinstrike is deep and locks on quite well to those deep targets.
If you ever have a chance to do this test, take the Quattro, lay out 4-5 targets about 2-3 feet apart in a line. Then swing the Quattro over the targets with a slow to moderate sweep. I'll bet it will hit the first target and then pass up 2, 3 or even all the other targets because of slow target processing. I know, I tried this test several times before coming to the realization that I had to stop inbetween each target and wait for the Qauttro to reset itself before moving on to the next target.
But, the Quattro is a good machine, I really liked it and the quality of construction pus the Xterras to shame, but unfortunately it didn't match my style of hunting and I could overcome the weight issue.