[Xiaomi Poco F3 / Xiaomi Mi 11X / Redmi K40] Calamaros:
Saying which rom is the best .. It is so subjective, because if you look closely, the vast majority of users will recommend and say that the rom they are using is the best.

Personally, on my previous mobile, I was using only miui, specifically the Xioami.EU and I was delighted.

But when I switched to Poco F3, I decided that even though I was happy with Miui, I wanted to make a change and try something else, hence I have been trying some roms (not all, because luckily, we have many to choose from).

Personally, I wanted them to work if not perfect, as well as possible, without apparent failures. That the performance is very good, that the battery behaves, but above all, that they provide you with a plus of personalization (extra adjustments and pops to put on the mobile).

So I tried:

- ArrowOS -> Quite happy, everything was going well and with some customization touches, I recommend trying it if you are looking for that and I think that it also updates from its own updater, in case you do not want to always carry the TWRP in tow.

- Hentai OS -> I don't like it at all, due to its null customization. I have also tried it 2 times, due to the good opinions that I have always read when they talk about it and to see if after a few weeks, it had improved in that aspect, but nothing, no matter how good they say it is, I don't like it at all nor does it give me that extra that I am looking for, so it is not a rom for me. Now, if you are looking for an experience as similar to a Pixel and as I mentioned, with zero customization, this may be your rom.

- Evolution X -> I tried the first version and it didn't really look bad. What happens, I think that the issue of updates is somewhat stopped and they have not released many since then, but I'm not sure about it either.

- LineageOS -> What to say about a mythical rom. I tried the first version and everything was going so well, that it is already a joy. I think this rom is also updated directly from its own updater, if you keep the TWRP they recommend for installation. It works in general lines very well, you have the security of the great community behind it and that it will be constantly updated and it also has its personalization touches, therefore, another recommended test.

- crDroid -> For me, for the use that I give to the mobile and what I was looking for as I said at the beginning, to this day, the "best" rom that I have tried by far. Everything works really well, it has customization options to give and sell, which I have not seen in other AOSP roms (as you will see, those based on miui I have not bothered to try any rom, because I wanted a change of miui after so many years being only true to miui). Above is constantly being updated with performance improvements and new customization options. And in addition, the developer / group of developers are very active and answer any questions that may arise, either in the rom thread or in the channel that is dedicated to the rom and our mobile in particular, the Poco F3, on Telegram.

This is broadly speaking, my totally subjective opinion, that there will be someone who may agree with me and surely many others, who do not agree.

But asserting that such a rom is better than the rest, just because it is the one you use, without giving any weighty argumentation, does not make much sense, because it can lead to mistakes, for someone who has no idea about roms.

The best thing is to know what you want and based on it, try different roms for several days each, in order to form a strong opinion and with arguments.

Sorry for the brick.​