Currently using the original Epic but also have a Cobra F9. The Epic is looking pretty battered after 3 years and has some issues with the lamination on the base so it is time for a new driver. I've been to two fitting days
Callaway Maverik: Ended up the recommendation was the 10.5 Max Head with the Stiff Hzrd Smoke 60 (1 inch shorter)
Cobra SZ: 10.5 standard head with stiff Tensei Orange flash shaft.
Out of the 2 the Maverik looks favourite at the moment, I 'm just not convinced that I got anything extra from the SZ, while the Maverik gave me slightly more yds and dispersion was much better. In the meantime I've been to the range and worked on my driving a bit and now hitting the Epic a bit better but still prone to the odd high and right.
Today spending an hour with the Pro on Trackman and the Ping G410 and Mizuno ST200 c.f. Maverik. Hopefully if I get a good fit he'll let me out on the course with it, which is the true test.
I want to come away from the fitting thinking yeah that felt really good which the Maverik got halfway there but the SZ was more a Meh!