Gigashop Tenore opened. Sounds different, but not bassy like my previous bassy pairs. The eBay Tenore has bass much more like the the ER4S, light and quick, while the the Gigashop Tenore has maybe 4dB more emphasis, but pretty much the exact same mids and treble.
On my previous bassy pairs, mids and treble were less emphasized, and one pair was actually less emphasized in those regions than the other pair.
So after listening to five different Tenores, I can say that no two really sound alike. I'm pretty sure that my previous "non-bassy" pair actually had more bass than this new eBay non-bassy pair, putting that previous pair somewhere in between the two that I have now.
So do I keep both of these? They sound very good, and almost identical except for the 4dB bass boost on one pair. It'd be nice to get a little more consistency.
I'll have to do more comparisons before deciding which pair is the more reference set. When a/b'ing I get the impression that the eBay bass-light Tenore may actually be too bass-light, as in less bass than what was measured in the previously shown graph. The bassy pair might actually sound closer to the graph this time around, but again more comparisons are needed.