To be fair, YT reviews have helped me out countless times. Often times seeing an attie I've never used before that gets opened up so you can just see the whole thing including the build deck really helps. At the end of the day they all need to earn a crust like we all do and they're never going to get much work if they just go around slagging off manufacturers products so I don't criticise them for that. You just learn to know when to take most of what they say with a pinch of salt. You can still learn plenty of really helpful stuff from them such as build tips and other useful info so they deserve appreciation for the help they provide with things like that.
On the flavour point I tend to put a lot more thought into what the juice is doing rather than the hardware.
@ZenAnarchi makes an excellent point about the effect of temperature. We all know how some things taste great cold such as a nice cold beer on a summers day while others taste great when they're warmed to the perfect temperature such as that nice glass of red Zen mentioned.
Of course, hardware manufacturers all want us to believe their hardware gives great flavour. How else are they going to sell their products? I just think that leads us into thinking that flavour comes more from the hardware instead of where it really comes from.
You put a drop a vape juice on your finger and you'll taste a nice flavour. You try having a taste of any other part of your vape gear and it's going to taste like crap. All the hardware is simply the delivery mechanism.
There are lots of ways we can vary the setup of our vapes to improve how well they deliver flavour from our juices and, of course, they all make a certain amount of difference in their own way which will definitely have it's own particular effect on flavour profile so all these setup variations do all make a difference.
I just think it's more important to think about what's happening on inside the liquid with all those atoms of flavour milling around and then think about how I can get the best from my juice in how I do my setup.