Hello from me too! For several years now, I have been trying out various flagship smartphones, but apart from an iPhone 4, I had never tried an iPhone before. In general, in the past 2 and a half years, I have had the P20 Pro, Mate 20 Pro, S10, P30 Pro, OnePlus 7 Pro, Pixel 5, and before getting the iPhone, I had the Note 20 Ultra. So, I will make a comparison between the devices I had.
• Build quality: a very sturdy device, it feels nice in the hand, and of course, the design of the phone is distinctive, and from afar, people can tell that the device you are holding is an Apple and it doesn't look like any other device.
• Display: amazing colors, very good viewing angles, and good brightness even under sunlight. I was worried about the 60Hz as I had 120Hz on the Note 20 Ultra. The difference was noticeable, but I got used to it in a few days and now it doesn't bother me. It's because of Apple's software, which has such animations that the 60Hz doesn't seem that noticeable.
• Battery: I am a demanding user. I take photos, watch movies, play games, spend a lot of time on social media, use GPS, and yet, I haven't managed to "kill" the battery in a day. What impresses me, and I haven't seen in any other phone except Apple, is that when I leave the phone, for example, at night and go to sleep, it doesn't lose any battery or loses only 1 to 2% with everything open. Amazing management. I charge it every one and a half days, and I don't worry if I leave the house with 50% or 60% battery because I know it will last. It doesn't charge fast, that's a fact, but it's better for the battery to last than to have to charge it twice a day.
• Performance: by far the best smartphone I have tested in terms of performance. I play Call of Duty and it runs better than on the Note 20 Ultra. I won't say anything more, it has been mentioned in other comments that it is very fast. I don't think there is a noticeable difference in performance compared to the next Apple models.
• Operating system: another fear I had when switching "camps". In the end, I got used to it in less than a week with no issues. I like it, it's comprehensive, but there are some things that Android has that I miss and will miss as long as I have iOS. For example, I miss customization (changing icons, trying different launchers, creating my own widgets, etc.). These are problems that the average user doesn't have, though. But the biggest thorn is called YouTube Vanced... For those who don't know, it's a version of YouTube that has no ads and plays in the background. The second part can be done if I access YouTube through Safari, but the ads are unbearable.
• Camera: it doesn't have all the extra features of other phones, but it does a few things and does them correctly about 90% of the time. My only issue is with the HDR, where Samsung and Google excel, and the fact that it doesn't do good portraits of objects. The skin tones in people are amazing, and the video is truly a separate category. The differences compared to the iPhone 12 and 13 are that it doesn't have night mode on all lenses (only on the main camera), it doesn't have the macro mode, and the cinematic video. I also uploaded two samples from two photos I took with the 11 Pro Max.
I was torn between this model and the iPhone 12, the regular one, and I chose this one because it has a better battery (as my wife says, it's better to be the big kid in elementary school than the small one in middle school). The 5G that the 12 has doesn't interest me since we are not yet ready for it in Greece. So, is the 11 pro max worth it in 2021? Definitely, it is worth it. But not at this price (with 150 euros more, you can get the 13 pro). However, as a used one that I bought, it costs around 650, which is a very good choice if you want to try an Apple device. That's all from me, I hope you are still awake after reading this. Happy shopping!