I had a pair of ML e-stat's - loved them except three nit-picks:
- Small sweet-spot
- Demanding current (1.8 ohm)
- 'Hybrid' bass was "slow" compared to panels
I replaced them with Linkwitz LX-mini + Linkwitz Phoenix (alt) OB-subs (x2). This resulted in same virtues of e-stats plus; sounds great everywhere in the room (no room treatments), easily driven with pair of Hypex FA-123, and articulate bass that keeps-up. Actually, that open-baffle bass was the biggest surprise - last thing I'd give up. Those little LX-mini's replaced Tekton DI (upgraded), B&W, and ML's. And I know exactly what you mean about ML e-stats - they were the last to go.
Still a big fan of ML and use them in the HT system for center/side/surround/atmos - where GoldenEar Triton One's are the mains there.
So to answer your question... what contenders are there with similar attributes...
Linkwitz LX-mini or LX521.4, Magnepan (never owned, but there is quite a following - likely good reason), Spatial Audio, Pure Audio PrProject, GR-Research, Kii and Dutch&Dutch will all likely provide similar sound attributes.