I have a SkyTrak from ~5+ years ago so I can opine on it. In general, it's pretty accurate and fun to use. The pairing with your device requirement is a bit annoying - sometimes it struggles to connect and in general, I'd much prefer the unit to come with it's own display like the new Garmin does. But otherwise, for $2k and the ability to plot ball flight (big selling point), calc RPMs, launch angle, swing speed, ball speed, face angle at impact, etc... I've been pretty happy with it.
However... If you're even remotely OCD, it 100% triggers that and you start to fuss over 0.5 degrees open and 2 yards offline and 500 rpms too high and.... You get the idea. Which then requires you get a good hitting mat to avoid injury because you will certainly end up swinging a ton. I use RealFeelGolfMats.com and have been happy with them, no elbow injuries and it's been in use since 2021.