I've got a couple of the Sennheiser HMEC 46 ANC headphones that I like and have been using in the Lears for years (also used the HMEC 45 prior). I'm cutting back on the flying and would be willing to send you one to try if you're interested. Very light weight, on-the-ear style with noise cancellation. Works good in quiet-ish jets. 15 dB of noise reduction is their claim.
They're discontinued and the used market for them is soft, so I'd let them go for a song if you decided you wanted to keep them. At the very least it'd give you an opportunity to try something on the lighter side of the ANC headset range.
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