To Milk or Jelq that is the question?

I know Jelqing is recommended here. Milking is something I had seen previous to visiting this site. Whats the difference between the two? I.e. Whats the benefit of (what is essentially milking) when your almost erect (jelqing) as opposed to when your not erect (milking)?

What I do is basically masturbate.

I start out with my dick soft and milk in the blood to make it swell up to a semi then continue to squeeze it harder and force more and blood in to gradually increase the capacity that my cock will hold.

When I get it to a good firmness I lighten up on the grasp and just rub it gently, so I don’t hurt my cock and just continue to masturbate to maintain as much size for as long as possible (which has not been very easy lately)
…without ejaculating, of course! :)