Sentence examples for both are excellent from inspiring English sources

Microsoft's own Bluetrack Mini and the Razer Orochi both are excellent mice for everyday use as well as being relatively compact.

Both are excellent films.

Both are excellent media for telling stories.

Both are excellent examples of couldn't-make-this-up verité.

There are only two tavernas here, but fortunately both are excellent.

I'm a fan of both of them, and both are excellent here.

For this role, Lisa Nandy and Kate Green would both be excellent candidates.

Both were excellent.

Both were excellent drummers, both congenial members of the band.

Both were excellent choices, though it meant John Robertson missing out.

As for desserts, I sampled only two, but both were excellent.