I've got nothing against BOSS pedals. I've owned and used quite a large number of their offerings over the past four or so decades, and still have a hand full of them - but in spite of how long they last and how nicely they're constructed, they are no longer my first choice when I want top-drawer effects of any kind. There are way too many other options available, these days.
I see the PX-1 as a utility pedal for those who don't have many pedals and who like the BOSS look/interface and don't want to be bothered with individual pedal purchases. But, for someone who has pedals from maybe 18 or more different pedal companies, this isn't a “I must have one of these" kind of device.
I'd prefer to just stick with the dedicated pedals I've already got, and may add to those (but still, probably with other dedicated pedals, for the most part). I also prefer the option of placing individual effects in the spot in the chain that they're needed. That's not really an option, with a pedal of this type.
I've already got a GT-1000 Core and HX Stomp and I almost never use them. I'm kind of sorry I purchased them, rather than maybe a half dozen dedicated, high-end pedals, instead. I think the latter would have seen a hell of a lot more use.
I'm saying this, even if the PS-1
can perfectly emulate all the original models of pedals that it claims; but being that it's a digital unit - likely, not. Digital emulations are getting better and better, but I don't believe BOSS are quite there, yet.
The only pedal it claims to emulate, that I may have been interested in buying, is the original BF-2 - but I have an original MIJ BF2 that I absolutely
love, and I"m not convinced BOSS have figured out a way to get the same magic that this model had, in digital form (I've also had their GT-3, GX-700, and GT-10 multi-effects processors, and still own all but the GT-3 that I gave to a fellow guitarist) - hence the not inexpensive purchase, some months ago, after having sold my original BF-2, decades ago (big mistake that I'll never make again).
All analog, baby.*
* Not saying I dislike digital effects, at all. I have quite a few of them, and many of them are absolutely stellar.
This particular effect (from BOSS) is one that I prefer in its
analog state, though.