Which headphone sound good using the Creek 5350 SE headphone jack

Most of my headphone listening is working out or travelling.  So I don't have great headphones.  With Covid 19 and my wife and I both working from home; I miss my louder music breaks... so it's time to take the plunge. I tried a pair of Grado's 100s and they sounded bad. Not sure of the specs on them.  I've heard the headphone jack on the creek is high impedance- so mb a bad match.  Any thoughts?  I have my eye on a pair of Sennhauser HD650s, wish i could demo them with my Creek before I buy.