The Spectre 2 has evolved from the original Spectre carabiner using the knowledge DMM have gained in the 4 years since the Spectre was first launched.
The Spectre 2 is bigger than the Phantom; the Phantoms size/weight ratio still probably has the edge as the best trad climbing carabiner, but the Spectre 2 is a touch more versatile - it has more metal to cope with bolt damage and will be slightly easier to handle and clip in adverse conditions. The Spectre 2 is full size and large enough to be used with gloves for winter climbing.
The carabiner is very strong, easy to handle, very safe and remarkably light - The Spectre 2 comes in at 32g with a 9kN gate open strength and a well rounded 8.5mm rope bearing radius.
The Spectre 2 includes all the usual DMM refinements such as a shrouded nose, an even tension gate and a well rumbled finish to remove any sharp edges or clipping lines. It behaves very well on all webbings from 8mm dyneema to 16mm nylon and resists cross loading brilliantly.