It's OK. I have used it extensively over the last couple of years.
On anything other than hard German paint it's probably overkill.
Meguiars say it's a "DA Microfiber System" but it works with rotaries too... It's main use on a DA is to provide you with extra cutting power, something a DA normally struggles with.
If you've never used Microfibre pads before you will have a steep learning curve. They feel different to use, too much or too little product and the pad can easily become grabby (less of an issue on a DA though) and correction results will be very hit and miss.
You need to prime the pad properly and you end up using quite a lot of product compared to a regular foam pad. The backing plates are also very thin so you need to be aware of extra heat build up that may occur (Depends on the polishes you use)
Normally find I have to clean the pad out after 2 panels with soap and water, and then dry it, else it clogs up with product, which is annoying (you squeeze all the water out and then I spin up the machine with the pad on it and hold it against my hand and that gets it dry enough to use) and after every set you work (so basically each pass you do) you need to fluff the fibres up again use a stiff brush or your nails and make all the fibres pointy again.
There are also reported issues with some of the backing plates flying off, although I've been using the same MF pad for the last year and it's been fine so maybe they've fixed that.
Despite their "swirl free guaranteed" on most hard paint types you will need at least 2 sets per panel to get anything approaching high corrections (you will never be able to get perfection)
I prefer the more consistent results with an orange or yellow hex logic pad... but as with anything it's a nice option to have when you need something heavier hitting. Been working on a few BMW's this week and without Microfibre & wool pads they'd still be looking pretty poor as the paint's just so damn hard.
Been using some Liquid elements MF pads and prefer them personally as the fibres are longer. They're £6 each online.