This vise is really an incredible deal for the money. Casting quality is excellent, and the well-machined slide keeps the jaws parallel throughout the range of motion. It is heavier and has a greater opening distance compared to other 5" vises on the market. The large anvil surface is very handy as well. However, if you are one of those people who like to beat on their vises with a sledge hammer, then you are likely better off with a forged vise. Expect to pay a lot more for that as forging is an expensive process.
My only complaint is not with the vise itself but with UPS. The package was dropped at least twice between Springfield and Houston, as there were holes on both sides where the jaws broke through the box. The damage was only cosmetic, but this package mishandling seems to be the rule rather than the exception for anything that weighs over 20 lbs. I'd be willing to pay extra to have things double-boxed.