I'm happy to share what experience I have, and I think it's great that you're reaching out to folks.
I've had a Model X since 2017. Before that I had a Renault Zoe since 2013. My missus has been driving since about '99, and has driven way more things than me. Our Model X got the front ripped off of it by a lorry (I was about 50cm and a few degrees from being flattened) and we had quite a few courtesy cars as a result, including a Mercedes S-class, and a Range Rover something-or-other. So my comparisons won't be super-relevant, and take them with a pinch of salt.
I don't regret the Model X at all, even though it was insanely expensive and could have paid for posh school for one of the kids, or a flat deposit or something. The missus really loves it, and is loathed to get rid of it when the Model Y Performance we've ordered eventually shows up.
The screen... I don't like the absence of physical buttons. I studied human-computer interaction at Uni, and started a usability engineering department at my first workplace. There are definite downsides to not having physical buttons, as you can't feel your way to buttons by touch, and have to glance away from the road. However, you've got Autopilot for those moments. I'd also add that, given the limitations of a touchscreen-only device, the Tesla UI is
very usable. Trying to navigate to various nested options in the Mercedes S-class was such a nightmare that it became distracting in a different way - the cognitive load of figuring out which menu level I was in and where to find the right option was distracting in a different, more frustrating way. The only time it's really been an issue for me is when I've wanted to type something into Spotify search whilst driving on roads that aren't suitable for Autopilot.
Spotify in the car is awesome, and the whole family love it. The kids love the games when we're parked up waiting for someone or something. The fart machine is great fun with kids/immature adults. Flooring it at traffic lights
never gets old (we're yet to be beaten). We've not used CarPlay, so I can't really compare to that. Occasionally I'll use Bluetooth audio for something that I can't find on Spotify, or a USB stick for obscure unsigned acts from twenty years ago.
Phantom braking on Autopilot is mildly irritating, but has never been dangerous to me. Think of Autopilot like riding a horse - it's good to have another set of eyes on the road, but you don't trust it completely, and it needs supervising. Sometimes it'll 'get spooked'. Occasionally I have to drive with it turned off (maybe I don't reassure it that I'm paying attention enough, even though I am) and it's a right pain in the arse having to
actually drive on motorways, so I would definitely miss it.
The Supercharger network is bloody great. Far more reliable than any other network I've used, and we were driving electric in 2013 when it was all nascent.
I've had issues with my Model X, but it was one of the first delivered in the UK, so my issues with it are hopefully not relevant. The plastic panels inside rattled when listening to the DOOM 2016 soundtrack with the bass on full; the falcon wing doors squeaked; the falcon wing doors rubbed the paint off; the keyfobs refuse to recognise me as me, and log me in as the missus; I beeped the horn so much via the app in the 'clap for keyworkers' phase of lockdown that it stopped working; I suffered the eMMC failure and the bloody indicators stopped working. So it's not been all roses, but I saw those as 'early adopter' issues for a ridiculously complex car. I'm hoping for all our sakes that the Model Y is much more tried-and-tested, as it's a simpler vehicle produced at much larger volume.
I'm guessing physical build quality won't be as good as a German car, but the software feels like going from a Nokia 3310 to an iPhone.
I don't know how much of the above applies, but hopefully it helps in some small way.
@HowieR Have you booked a Model Y LR test drive? In my area they were quite available, I think I managed to get one the next day.
