Hi! Yeah, it's weird to answer in a thread that's been dead for like 4 years, but I guess it's better get an answer late than never. My feedback will be brief because there's around one or two issues in each of the audio demos. The original one that you made with your headset is good enough. What it lacks is merely: noise gate and compression with sidechain applied. Noise gate can be soft (have 6-8 dB of reduction) with a relatively low threshold - noise or room treatment isn't that bad, so no need to think too much here. About attack and release - you can simply leave both at around 0-3.5 ms. That works for me, might also tighten up the sound, too. As for the compression - your audio is too dynamic and those tch, s and sh sound are really harsh. You can kill two birds with one stone here: use compression as usual to even the dynamics, then add a sidechain (in FabFilter's Pro C-2\3, for example), activating the sidechain EQ and adding a high shelf or a focused bell to make the compressor work harder on those high freqs.
The remastered one is better though, the only thing it could certainly use is a touch of high shelf boost to give the voice more of clarity and make those sibilant letters shine - in the attached video they are rather dull and sorta lost (most likely whatever noise reduction you have applied there took too much of the highs). You can also additionally cut a bit of low-mid\mid frequences (just a touch, around 1-3 dB) to let other frequences breathe more.
Still, you did develop your skill and it's noticeable in your demo video. Well done!