Several queries here
Several queries here
The variation comes from the added features, not speed. If you skip the extra options, opt for a more affordable board. What makes you interested in these models? Also, keep in mind that your selected board determines whether you can use DDR4 or DDR5. I recommend using PCPartpicker to check compatibility.
The video was released a year ago. At that time, the recommendation shifted from DDR4 to DDR5. You can find a comparison on their site for more details.
I suggest sharing your budget and needs so we can tailor a solution that offers excellent value.