This Strava watts/power estimation is crap.

My friend was getting her power estimated by Strava way below 100W every ride, then she got a Magene PM and suddenly she was recording 130-150W. This function is totally useless.

At 5% error, you might as well ride by heart rate or rpe. Or alternatively, dont wate time and money on  a power meter in the first place

5% accuracy at 200 W is 190-210 W, if I didn't know what riding at that power feels like and waned to learn my zones, even with that margin of error it would still be a valuable information for me. That could be acceptable for people who don't even know if their FTP is 250W or more like 150W, and can't afford more proven PM for over twice that price. However, for someone experienced with using a reliable PM, that would be too much drift.

Two of my friends just ordered these Thinkrider PMs, but if they turn out to be a total crap in GPlama test, they'll just return them.

Unfortunately no, it has some proprietary mount - worth noting it that it's different mount than the one they used in their NT201 radar, which I bought last year. I guess they needed to redesign the mount to be more robust, since NT301 is heavier, too bad they didn't just use Garmin standard. On the flipside, there's a saddle rail mount included this time (NT201 came only with a rubber band), which can also be used separately with any Gopro-style mount, so if you can fit some camera attachment to your seatpost or saddle, you can use it to install this light/camera device too. I'll try to install it directly to my seatpost, which is aero-shaped but flat on the rear, I'll post some pictures if I succeed.

If you want something stiff, avoid anything with cutouts like the one you posted, or with aluminium 24mm axles. You can try Senicx PR3, or GR3 which is theoretically a version for gravel bikes, but I'm not sure if there is any difference between them. I installed PR3 on my friends gravel bike a year ago (she wanted some cheap but reliable 165mm crankset), made a few thousands km and no issues so far. You can find these in 1x or 2x configurations, or just the crank arms (they have 3 bolt GXP mount so there are plenty of chainrings and spiders to choose from), in lengths up from 165mm. It should fit your bike, if you already have a BB for Shimano cranks you don't need anything else.

Good for them but I don't see the point?
That's carbon crank prices and heavier than ultegra

Similar design to Zrace RX2 crankset, which is only slightly heavier but half the price. And there's also Senicx PR2, which is half the price of the Zrace one, though this one is forged while Zrace and Stone are CNC machined. However, if someone is looking for some good quality aluminium crankset shorter than 165 mm, Stone could be a good choice.

In topic of cameras, I recently bought Ravemen NT301, which is a rear light with a video recorder (around $100 from official Ravemen shop on Ali). Picture quality is quite good, it lasts long (I have yet to test if 13h of runtime declared by manufacturer is realistic), and the light is more than bright enough. Though it's definitely not an action camera, video is shaky and color balance is kinda weird, good for getting license plates but not for making nice videos for Instargram. Now I'm looking for a similar solution for the front, something that would last 5-10 hours, record in good enough quality to get plates, preferably record sound since my Ravemen doesn't have a microphone, and could be installed underneath the computer mount (that's te only space I have on my handlebar). Video stabilization and front light functions are optional, I can use a separate light. I was thinking about getting an action camera, but battery runtime on these is not long enough for longer rides, and I don't want to carry spare batteries nor a powerbank. Same issue with motorcycle recorders, it seems all of them require an external power source. I know there are front lights like Garmin Varia Vue or Cycliq Fly12, but these are too pricey for me, I'm looking for something below $150. It's kinda weird that there are several rear bike lights with a camera, a lot of them for less than $100, but there's not a single front video recorder aside the expensive ones. Do you think something will appear in the near future, or maybe there's already a solution I overlooked?

I've seen somewhere on Instagram someone bought one of these Garbaruk knockoffs, when he stood on the pedal the crank started flexing, and when he stomped harder it broke. Garbaruk responded with similar video with their original crankset under load, no flexing noticeable. Just avoid fake products, they're almost never good. I bought a Zrace RX crankset for half of that price (without chainring), and it's pretty decent.

Hi,
I have these, bought them a few months ago, made about 1500 km. No issues, as expected from Elitewheels. I replaced the stock ratchet with a 60T ZTTO, fits well and works good so far. I can't compare them with anything else than Vision Metron 40 SL from 2017 I had a while ago, both feel stiff and lightweight. Overall, I can tell these are very nice wheels for that price.