What to buy?

Hello, in the era of the corruption of everything is quite difficult to choose something really worthwhile, all sorts of YouTube and other platforms just teeming with a bunch of sales related to one or another smartphone, that's why I would like to know people's opinions (although I understand that everyone in fact will drown for what he uses it). Now, I want to buy a new smartphone, and here I can not decide what to choose.Want to buy the flagship model that is at the moment, and I get to choose from available at the moment smartphone namely, samsung galaxy s10+, huawei p30 pro and xiaomi mi 9. Kind of like it is not bad machines with their pros and cons, but I would like to take the best there is at the moment. Or better to wait until the new iphone, google pixel, galaxy note 10, and already then to choose a more appropriate model. And Yes, primarily interested in the smartphone screen,sound,performance, design, and then his camera. At the moment I use htc one m8( it is a pity that this company in fact no longer makes a smartphone) so the question would be what to buy would not occur.