Creatures Caves

Can anyone help me out? I'm trying to compare two audio samples but my hearing isn't... great. The new sample includes a new noise reduction technique that I'm trying out and some cheap 'sound batting' that I gathered from around the house.

New Audio Sample

Old Audio Sample

While I'm on the topic, Nutter mentioned being able to hear my computer fan when I was running the last Livestream Wolfling Run. I don't know if there are any solutions to fix this online, but I'd appreciate any help I can get. It isn't hard for me to get a noise profile, so if there's any software that can remove that sound live would be a fantastic help.

ETA: I literally can't detect any difference between the two. :C

ETAA:

This time, I've recorded my voice with Microphone boost turned off and then experimented for a while with "Noise Removal" to see what sounded best. I think I figured it out, at least until I can get a microphone I can more finely adjust the Gain on.

Audio Samples

Part 1 is the raw, unedited audio. Part 2 is the audio with Noise Removal. Part 3 is the raw audio amplified so that my voice is audible. Part 4 is the audio after Noise Removal, amplified.

Does the final sample sound better than the "New Sample" above?