If you don't trust your ears, then just go with speakers that have been shown to have good measurements. So don't buy the speakers unless you can see independent 3rd-party measurements, not measurements from someone's room or measurements from the speaker company.
So stay away from B&W speakers since they have been shown by Stereophile, Soundstage, S&V Magazine to not have the best measurements.
Here are on-axis measurements of the B&W Diamond towers series generation 1-3. If these $20-30K B&W speakers can't get great measurements (the cheap Infinity P362 has better on-axis and off-axis), I don't think their other B&W speakers will measure any better.