I've been using 5500's for years and I absolutely love this glove. Hand closure feels so natural, and the catch angle is perfect for my style.
If you're going to customize this glove I'd only recommend two changes. First, if you like your glove to be snug, then have Vaughn put a more modern (Ventus, Vision, etc) wrist strap on it. The 5500 buckle does not hold your wrist tight at all. Second, get the perimeter reinforced so it doesn't curl over time.
Other than that, this glove is fantastic!