circle is the user friendliest-service so far. after that maybe coinbase.
I have been using coinbase since. Why should I transfer to others?
Coinbase is definitely NOT user friendly. I wonder why people still use it.
I haven't had problems with it myself..
I have never had an issue using Coinbase, either. I've bought and sold quite extensively, on there, over the past 16 or so months and never a hiccup.