This being my first shotgun, I can only give anecdotes, and a narrow personal opinion regarding the weapon.
I believe the Mossberg 590 is a very well built, and visually sexy shotgun for the tactical minded enthusiast. Fit and finish, the 590 is overall excellent. The parkerized finish is an even, non reflective, matte black, and will wear where it should. This can be mitigated with light lubrication. To those who buy this new, I recommend taking it apart, cleaning, and lubricating the shotgun before use. The strange grease that the shotgun came in caught all sorts of particles from the packaging, and learning routine maintenance is a good habit to pick up. The pump will be very stiff at first, but general cycling of the action will smooth it out. Bud's service was very prompt, and am happy with my purchase. I will buy from them again in the future.
Some additional thoughts:
Getting a Hi-Viz snap on makes it easier to acquire the target. Especially for those with less than stellar vision.
Shortening the stock is recommended for the average (height/weight/balance) shooter, as the stock is more akin to an American Trap/Skeet shooting stock.
I found the heat shield to be useful for extended durations of rapid shooting and practice past 200 consecutive shells.
Good gun. Happy shooting.
Rating: 5 of 5 Stars!