This is my first pair of fight shorts so my review doesn't carry any expertise. However, I was extremely impressed by the quality of these shorts; they are extremely hard wearing and light weight making them perfect for ground work and are a snug fit which also makes them a good choice if you are primarily a striker.
I have a 28 inch waist and found that the 30 fitted comfortably using the internal drawstring and overlapping the velcro strap slightly. Although this is not ideal it does not seem to have had an effect on their functionality.
My only minor gripe is that their is a large amount of branding on the shorts including a signature which is hidden from view in the picture. However this reflects my conservative tastes and does not have any effect on the product itself.
All in all these shorts are exceptional and at the price are a bargain not to be missed!