ok, so I got my new residencia and cedula last Friday (it could have been sooner, but I didn't have much time).
So I filled it in online first, then when it was approved, I gave my Original papers to Migration here in POP.
When they checked it, they phoned me up and I payed the 5000 pesos (also here in POP). And then they said that after 7 days I could go to Santo Domingo to get my new residencia, but they also said that it is better to wait a couple of days longer because we are in the DR after all. So I waited 11 days and on Friday I went to Santo Domingo with only the ticket of payment and the one paper I got in POP that I gave all my originals. I went their and explained them that I had done everything in POP, gave them the prove of payment and the paper and indeed, everything was ok and I only had to wait to get my picture taken. So I got my picture taken and afterwards got my residencia.
For me: you don't have to pay the VIP to get it the same day, so it is a bit cheaper and it goes a bit faster then before when you had to wait in line in Santo Domingo to give the papers, then another line to pay etc, but that isn't that much of a difference. For me the really good thing is that when you go to Santo Domingo, you don't get any new surprises that they changed something last minute and that not everything is ok. When you go their, you go without stress, because everything is already approved.