Been using the Sony Linkbuds all weekend while out and about. These things are really great. I did wind up exchanging them to see if the bluetooth issues persisted. They do, but not always. That said, they're still great. I was at an aquarium with my kid and had them on the entire time. Heard everything around me and they were snug. No issues there. There's definitely a place for these in my collection for sure. Even went to a doctors office this morning, had them in the whole time while waiting. Heard everything around me, no one heard my music. I'll be keeping these. The inlaws will be visiting soon and we'll be hitting a zoo. The Linkbuds will be a godsend.
Got mine yesterday. Indeed, they are really nicer than I originally thought they might be. But for WHAT I wanted them for, they would do either way. I am pleasantly surprised that they are nicer than I anticipated. I used them last night after getting home from work, and then again, all day today while working in a mechanical room with coworkers (other than recharge, they were on a full 8 1/2 hours).
My first impressions are as follows:
The hard plastic creates hotspots in the concha part of the bud for me. I will give it a week or so and see if that improves. If it doesn't, I will just take some foams from my flathead earbuds and put them over it and see how that works out. Keep in mind that hotspot is strange, as it doesn't actually hurt while wearing them, but when I move them around, or take them out, it hurts then; maybe a reaction from the material used. I used to get the same thing from my jeans; the metal button would cause irritation. So as long as I don't move them (which they absolutely won't on their own), it is not a deal-breaker for me. But then again, I guess I have never worn recycled cars on/in my ears before.

Overall, these really are comfortable and hardly noticeable in my ears (other than aforementioned hotspot when they are moved). I switched out to the large wing on both sides to get a better fit than the small (even though my ears are small to medium sized).
In the 1 1/2 days I have used them, I have only had a quarter second(ish) cut-out on one but, but other than that, the BT has been rock solid. I have been using either my Note 9, or the iBasso DX300 for the transport. Hopefully that helps others know that maybe not all of them have issues???? Also, at about 5 hours in, I was at low battery (about 16% in the right bud, and 40% in the left) I put them into the charging case for about half an hour. Low and behold they were 100% charged when I put them back in. I also noticed that the case went from 100% to 67% after fully charging the buds one time.
I am sort of chagrined at the sound coming from these. First, most flathead earbuds (which this is most similar to) do not have the amount of bass that these have. The sub-bass is VERY rolled off, but the midbass covers this up (at least on most of the tracks I would listen to). Some rap, and R&B might not sound good on these if they are all about sub-bass. Secondly, the quality of sound for only having AAC and SBC is astounding. This just goes to show that those codecs CAN be implemented in such a way that the sound is really great. Audiophile quality? No, but I was not expecting it anyhow. I would put these up against a lot of AptX or AptxHD TWS (seriously).
For those pre-reviewers (consumer review sites) that say they are light in bass, they are either serious bass-heads, or they didn't fiddle with them long enough to get a good fit. These are the most sensitive to movement I have ever seen. Basically 1/64" (not an accurate measurement) can make them sound anemic, or full and rounded.
The Sony app has worked fantastic for me, and I have had 0 issues. Upon first connecting them, I simply used NFC to pair them (per the instructions), and I was greeted with a FW update (which took about 30 minutes to download, and another 7(ish) minutes to actually install. Now, I have read that the EQ in the app doesn't do much, but I would TOTALLY disagree. No, it doesn't allow for drastic changes (such that you would need to lower gain for instance), but if used properly, you can shape it to anything you might want (including bass). The bass slider is not as useful because it raises the lower mids also, but the "Clear Bass" slider does the trick nicely. I have boosted the 2 right most treble sliders up some because they are a bit warm for my tastes OOTB. After using this EQ I find them to be very clear and full sounding.
So far all the features I have tried work very well, except DSEE because I haven't listened to many .mp3 (or compressed) music from them. Mostly Redbook or higher, so DSEE is disabled with those. I also have not tried 3d audio (or whatever it is called). I have Amazon HD, so I will be testing it at some point. I would imagine it should sound pretty good considering that these are open buds, and therefore have a huge soundstage already, and imaging is also good. So, if it gets better, I will enjoy that feature.
As to my expectations, they have delivered and then some. If I can keep from having sore ears in the future, these will be my (most of the time) work buds. I will continue to wear my flat heads on occasion still too.