I own an Explorer II and decided I needed a second machine so I could draft family and friends to hunt with me.
Well, the long story made short, at least where I've been able to detect the 250 sees everything the ExpII does, usually nothing deeper than 6" or so.
It is very light, swings easy, is well balanced, and offers far more performance than it's pricetag would lead you to believe is possible. It has incredibly fast detection, it is impractical to move it fast enough to miss a target and ID it properly. Impractical, not impossible.
Just like any other detector, it can be faked out by rusty nails, bent nails, screw caps and the like, but there isn't much you can do when the signal exactly mimics a good target. It is plain killer on coins, and a real joy to swing.
It is also very easy on batteries, remarkably so. And since it uses 4 AA's, your battery budget won't be so extreme as those units that use the mega-expensive 9V variety.
One thing to be aware of is to keep the gain down with the stock coil, most guys run 4 or 5 bars. In good soil and a nice tight wrap of the coil cable to the shaft, I can run the sentitivity at max or one step below, but frankly the little demon works fine at mid-scale for coin sized objects.
In all metal mode and max gain, I have found spent bb's in my yard, now you tell me, how's that for performance? I can't stress enough the need to tightly wrap the coil cord around the shaft, and put a piece of electrical tape near the first turn down by the coil. As with most Garrett's sensitivity is an issue, and if you get flakey results while swinging, make sure the cable is immobilized but leaving only enough slack to allow the coil to reach a suitable set of angles.
It is far more machine than I expected, even after having pounded the internet forums for info. No, it can't keep up with my ExpII, but it is lighter, is easier on batteries, and it makes swinging the dang thing fun.
One last thought, this thing is LOUD with no means for adjustment. The only quiet tone is during pinpoint on deep objects, so if you plan on using headphones they pretty much must have volume controls. For headphone-less opperation, it is still loud enough to where I found it neccessary to block off the speaker "vents" with electrical tape, and there is still plenty of volume for me.
DAS