A channel is a channel,once made there isnt a real chance of changing the lay of the hammock.
A gathered end can be adjusted back and forth and tweaked to how you like it.
Both are comfy. Both have been proven dependable. Flip a coin and make it.
If you do make a channel, it can be made into a gathered. or vice versa so you really dont loose anything. Besides you'll be making more in a week or two...its all part of the hammock brainwashing.
Repeat after me:
I will build more gear
I will buy more gear
I will talk more gear
Ambulo tua ambulo.