I must say that the OM System LS-P5 has the most unimpressive specifications that I've seen in a 24 bit recorder priced at $250.
The "Tresmic" had better be magical, and I have no reason to suspect that would be the case.
My list of "b.s. tech" is long and storied, and I want much proof in real circumstance before it would get my attention.
Also, 'Mic + Recorder' packages generally limit flexibility.
Who flies their recorder on 15' stands?
Disposable batteries isn't a feature that I'd chase.
Replaceable recharchables or rechargable packs is.
I use rechargeable AA cells in my Fostex and Sony, and I like it.
Olympus seems to have focused on medical instruments:
https://www.nytimes.com/topic/company/olympus-corporation