Need some Speakers with sensitivity >90db

A friend is looking to upgrade his speakers. Budget is in the region of $800-$1400

He would like floor standers, but monitors are OK as well

They must have a sensitivity greater than 90db in order to play nicely with his amp

We tried my 89db speakers last night and they were very good - except when a couple of tracks were played loudly - the bass got a little out of control

With my amp the sound was perfect, so I’m thinking if he tries a speaker with higher sensitivity, it should be a better match.

I’ve taken a look at Tannoy Mercury 4’s, which come in at 93db and there are a couple of Martin Logan bookshelf/monitors at 92 db

Thanks for any suggestions - Steve