I am sure they work as advertised. Although before buying you might want to inquire as to who builds their cabinets as that would really be your main concern with this type of purchase. You want to make sure they are being put together on a real CNC setup by a professional and aren't just being cut out by some dude in his garage with a circular saw.
There are probably 20 or 30 companies (most of which are really just one dude, no matter how often they use the phrase "We" on their website) out there that will build you a deluxe unit like this, so you might want to seek out whichever one is closest so you can check out their operation and sample cabinet in person.
Nobody?