Heritage guitars are built by the old gibson staff in kalamazoo, michigan. They build pretty much the exact same guitars they always built. The quality is far better and more consistantly better than a modern gibson. In some cases the price of them is less aswell, which makes them an even more attractive prospect.
The only real drawback to these guitars is that will probably not hold their value so much as their Gibson counterparts, since it doesn't have "the name" on the headstock.
Really just ask yourself whether you want a players guitar or a collectors guitar.