Callaway Big Bertha B21 vs TaylorMade M4 Driver

We couldn't find enough data on either product to be able to come to any reliable conclusions. We highly recommend that you take a look at some other options in the $170 and $340 budget ranges instead.

The Callaway Big Bertha B21 hasn't managed to perform well enough to earn a place in any Golf Driver roundups conducted by sources that do their own, high-quality, hands-on testing. That alone makes it a hard product to recommend.

Moving on to the TaylorMade M4 Driver: no sources that perform reliable and objective hands-on testing have included it in their Golf Driver roundups, which usually means that a product doesn't make for a good purchase.

As a last step, we wanted to do a head-to-head Callaway Big Bertha B21 vs. TaylorMade M4 Driver comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.