Thread is bit like my speaker history, started with Celestion Ditton 110's then went to SL6S, the aluminium tweeter updated SL6 with it's original copper dome tweeter.
Used the SL6S with my Incatech Claymore amp, considering the SL's weren't easy to drive, but the Claymore did great job. Front end was LP12' Ittok and Asaka or K18.
The SL6S were pretty good, set up on good stands, mine were made from kerb stones !!!
I then moved to ES14s, single wire with phase plug on the driver. Only thing the two had in common was both had listenable metal dome tweeters, most brands would take your ears off in those days.
Can't remember what drove me to replace the ES14s, do remember them having a one note bass, the port chuffeed without the bung, and they were lightweight with it in, also the bass was a bit boxy, so I added few extra deadening panels inside.
At the time I was helping out in a Linn dealership, so borrowed both Kaber and Keilidh, both were good in ways, but neither were what I was after.
What found and bought to replace the ES14s was a Dynaudio Kit called the Gemini. It is a mid tweeter mid design, with about 5inch drive units and soft dome tweeter.
In summary these had better mid than Epos, faster than a Kaber, more bass than a Kaber, not boxy, no booms, increadably tunefull and live sounding.... 18 years on I still use them in the lounge, tweaked and reworked several times to keep them improving...
Which made finding a speaker I liked as much or more became dam near impossible...... In the end found the PMC Fact8... Again has mid range like most designs don't achieve or ignore !!! ... As tight and fast again unlike most designs about.....
Did the ES14 set the standards for me ? ........ Try the new PMC twenty series, they are a spin off from the Fact8.