I second KoJ's pick, for the money it seems to be the go-to right now and I have not heard of many complaints. that being said I haven't actually looked for them, so do your own research around it but it's probably the one. if you're fine with used you can find some other types of deals, acer predators for ~330.. but it's only mildly better than the Gigabyte and probably not worth the risk at the end of the day.
it's different opinions and you have to still make some of your own conclusions, so the advice here isn't magically better than youtube. you probably have seen these answers in the videos, all of these are popular picks.
if you want to be at the bottom of that range consider this: Acer Nitro XV272U
but that gigabyte is better for not that much more. if you're going up to 400 get the dell over the lenovo.