I prefer the phone, if I have to have a verbal not present conversation.
I don't mind using Skype for one one on conversations. I have used Google Hangouts for a conference call type situation, and it was very frustrating.
I generally dislike the call quality on Skype, especially if/when there is a delay (my one friend I speak to on Skype is in Australia vs my US location, and it is very frustrating).
Lastly, if I am going to use a text based system, I prefer Facebook's. I can see when/if the message was delivered, if you have seen it, and, ergo, if you have decided to completely ignore me. It leaves out the guesswork of usual text messaging that makes you wonder if they are ignoring you, or did someone not get the message.
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Aspie Quiz: 148 ND/50 NT
AQ: 41 (AQ-10: 9) EQ: 17 SQ: 31 FQ: 44 RAADS-R: 178
ASD Diagnosed 4/22/2016