I have always used centre loading metal ones, some times in five gallon tanks and sometimes in triple tanks.
They are easily the fastest to load and never suffer from sticking problems.
The secret is keeping a smooth curve across the width of the film with your right hand by squeezing the edges of the film. At the same time rotating the film on to the spiral, by twisting your wrists away from each other.

Badly done you can get kinks in the film.
The best way to practice is to sit in a chair watching television. and Just go to it.
If you kink the film start again. The more kinks you get in it the easier it will kink next time. Just keep on using the same film.
As you get more skill you will not even kink a previously badly kinked film. By the end of an evening you will be an expert....

For those who don't know, a kink formed when loading any type of spiral will show as a black fine half moon shape when processed.

It is well worth learning to load a metal spiral.
they are far easier and quicker to load.
They never ever stick.
They are far easier to clean.
They never cross contaminate.
They are virtually unbreakable.
slight dampness is not a problem.
They are far easier to dry. heat won't hurt them.
agitation marks become a thing of the past.
Never a need to snip corners as the film is wound on not pushed in.

In my estimation they are superior in every way.