(simply a re-named Quantum XT), are two-filter, slow-sweep models.
They share all the coils that the Classic III, ID, IDX models and XL Pro, XLT, etc., use.
They do provide a little added visual information than the IDX Pro, and a feature or two to tinker with the audio response. However .... my biggest grips with them was that the operator doesn't have full control of the discrimination for precise adjustment. You're limited to accepting or rejecting the eight blocks or segments of discrimination range and that eliminates the ability to "fine tune" the rejection point for various targets and/or ground mineral conditions.
Who knows, you might actually like it ... but I would put my modified IDX Pro up against any Quantum, coil-for-coil, in any environment and match or better the overall field performance. I have for years and my modified Classic III's and IDX Pro's have never 'lost.' Just remember that they are two filter, slow-sweep designed because if you over-sweep them in moderate to higher mineralization you'll have a definite impact on performance. Use the excellent XL Pro for moderate to fast-sweep duty.
Monte