I think LOUD might go hand-in-hand with ear discomfort.
If you are VERY sensitive to ear pain, the only way to be sure is to audition the speakers at loud volume for a long time.
As for “depending” on amps, most speakers today with sensitivity of > 85dB/2.83V/m will be just fine with 100WPC.
You can also use EQ (manual Parametric EQ or Auto-EQ) to lower the frequencies from 8kHz-16kHz by 1dB - 3dB. Maybe try this first before buying new speakers.