I've been thinking about getting the Phonak as well. Tried the 7000 last year, worked really well, even with generic ear plugs. Similar noise attenuation in the turboprop I flew back then as my Lightspeed Zulu2, but couldn't justify the expense back then.
Not helpful since you are looking for alternatives, but I'd also be interested to see if there are any other lesser known options besides Clarity Aloft. Their solution looks a bit less comfortable to me.