The first one looks much “slicker” and “polished” but I can’t really find a demo of it in action.
The second one looks decent too, and I tried the demo and it works.
I guess it depends on your budget. You’ll still need to rent at least one VPS to get started.
I can help you with that, or even do it for you.
You’ll also want to keep all of these things separate.
For example, you don’t want your domain name registered at the same place that does your DNS or your CDN. Keep all of those separate. Be very wary of any service that offers to do everything for you, because they will lock you into their service. It’s always best to have complete control of your own stuff (domain name, DNS, CDN if needed, and hosting).
As a first step, ask the BSEtech Udemyclone guys if they will give you a demo or a free trial to check it out before buying.