NEGATIVES
Grey sleeves it comes with are poor
Vacuum isn't very good
Hand pump is not good quality
Bulky as an ADS
All three above aren't the fault of MOS, and are part of the original manufacturing.
Getting around it however, I suggest ditching the grey sleeves, and using the silisleeve as I have explained in a recent thread. Much better grip, the stretch is more powerful, and loss of suction remedied.
Ensure either the pin issue is sorted out on all future SDs, or mod them with the same attachment system used with penis pumps, as has been offered.
Get rid of the hand pump. I know not much pressure is needed, but it is pretty useless, and needs allot of pressing, waiting for it to decompress. Maybe start offering a MOS handpump.
POSITIVES
It feels really comfortable once your inside.
The head design of the attachment is original, and fixes nicely to the coronal ridge of the glans.
Excellent quality rods with so many that even the largest man is catered for.
Hanging with the MOS SizeDoctor is very secure.
You can sleep in it if your a back sleeper like me