When looking at second-hand Callaway drivers there a few keywords to look out for; Pro, Alpha, and Sub Zero models are for the better players. They feature a centre of gravity location closer to the face to reduce spin, but consequently, this makes the club less forgiving.
Drivers with adjustable or moveable weight such as in the EPIC and newer Big Bertha iterations allow you to change the centre of gravity location and alter the shot shape to your preferred flight. If adjustability is not your thing, there are plenty of options that have been set up at Callaway HQ for maximum performance such as the XR and Rogue driver models.
Callaway Golf was founded by the late Ely Callaway, who operated under a simple business promise: Deliver Demonstrably Superior, Pleasingly Different products and services. This philosophy turned what was originally a boutique manufacturer of high-quality wedges and putters into the world's largest manufacturer of premium, performance golf products. Callaway make everything else needed to play the game and operate at several price points with products staying in the range for 18 months to two years.
Callaway golf Tour usage is widespread with multiple wins on both the PGA Tour and European Tour. Major winners such as Sergio Garcia, Phil Mickelson, Danny Willett, and Henrik Stenson all use a Callaway driver.
Callaway leads the way in design and innovation with the most important (and memorable for most people) their Great Big Bertha driver. Not only was this the first driver to be made using titanium (now synonymous with driver manufacture) it was the first in a long line of Big Bertha products, one of the most valuable sub-brands in golf.
But this was just the start of thing to come. The FT series introduced carbon to the manufacturing process (winning a few majors along the way) with FT-i being the first model in a short-lived experiment with square heads. In recent years there has been a focus on ball speed which has led to driver faces getting thinner which raised some durability issues. Jailbreak technology (first seen in the EPIC driver) strengthens the load-bearing capacity of the face by way of two bars which run sole to crown directly behind it.
In 2019 Callaway turned to Artificial Intelligence in the search for more speed and distance. Using a supercomputer Callaway was able to make tens of thousands of virtual iterations of their ‘Flash’ face until they reached the one that features in the EPIC Flash driver.