Aight, got the Sony WF1000XM3 in the mail.
The case took probably 40 min to charge up. I was using a USB-C to USB-C cable from a 3A adapter so that seemed surprisingly long.
Pairing with NFC was seamless much like it is with their over-ear bluetooth cans. Thanks, Sony!
The case is beautifully designed despite being a tad larger than I'd like. It feels very much like a Sony premium product worthy of the price, which is not something I ever felt about the original WF-1000x. The brushed metal lid and soft-touch material on the case feel great in the hand are quite eye-catching.
The fit was easy. My left ear is a weird fit and always seems to give me trouble with universal IEMs, but the large hybrid tips seem to work well. I've always thought the Sony hybrids are some of the best in the business, so I was happy to see a version of those included here. The XM3 has a deeper insertion than most TW models which helps.
The noise cancelling is pretty amazing by TW IEM standards. They don't block out external noise as well as well-fitting CIEMs or Sony's own over-ear ANC cans but they're by far the best isolation in terms of TW models that I've tried.
They sound pretty good. They're warm with the usual Sony midbass hump, but luckily that bass emphasis doesn't bleed into the mids like they do in the Cambridge Melomania 1. There's none of the chestiness with the XM3s that you get with the Cambridge . The mids and lower treble have a bit of a smooth, hazy quality so that the leading edge of notes can sound indistinct. For example, there is some bite missing from big rock guitar power chords or other dynamic flourishes. This presentation feels like a conscious tuning choice to keep the XM3 easy-listening and tone down any aggression. Don't get me wrong--the XM3s aren't dark-sounding, but in the mids they're a bit laid-back. At the top of the spectrum there's the typical treble spike you get with a consumer-friendly sound signature, but even with that treble spike the XM3 sound a tad closed-in and lacking in air. I really hate how most of these TW models lack a smooth and even treble response, but the Sony has a bit of sparkle and treble definition. The aforementioned treble spike is mostly well-controlled without splashiness or excessive sharpness.
In terms of resolution, they're fine. They're not detail retrieval monsters (and who would expect them to be without lossless codec support) but they're more than passable for a consumer-friendly sound signature. I'm using a Pixel 3 XL streaming CD-quality Tidal (probably doesn't matter when limited to AAC) and they sound nice enough for me to get lost in the music, but they aren't as revealing or have the tonal accuracy of my benchmark TW IEMs, the Mavin Air-X.
Speaking of, comparing the XM3 to the Mavin Air-X, the Mavins are better-sounding. The Mavins are cohesive through the entire frequency range and the overall presentation is like listening to an excellent 2-channel speaker system.
If I had to score everything I've owned or heard in terms of sound quality (mostly from memory):
Mavin Air-X: 9
Sennheiser MTW: 7.25
Bose SoundSport Free: 6.75
Sony XM3: 6.5
MW07: 6
RHA TrueConnect: 6
Cambridge Melomania 1: 6
Jabra 65t: 4.5
CKR7TW: 3
Scoring in terms of overall product experience (build quality, battery life, case size, features, specs):
I'm excluding the MW07 because I only got to listen to it for an hour.
Sony XM3: 8
Mavin Air-X: 7.5
Cambridge Melomania 1: 7
Jabra 65t: 6.5
RHA TrueConnect: 6.5
Bose SoundSport Free: 6
CKR7TW: 4
Sennheiser MTW: 3 (battery woes and bugs galore)
I'm not sure if I'm going to keep the XM3. I'm still stumped as to why Sony left out LDAC or aptX support, as that alone is such a big strike in my eyes. We'll see how I feel after a few days.