I owned a plug-in hybrid for a while. I had dedicated home charging which was used almost exclusively and hence the running costs were low. The electric only range varied between 22 and 30 miles which was enough for most days but I would have preferred more, say 50 miles as that would have covered the majority of my use.
The downside of the plug-in was on longer runs when the battery is just a dead weight that you're carrying. My average fuel consumption on trips of several hundred miles was a disappointing 38 mpg. The fuel tank was also smaller on the plug-in version (due to battery intrusion).
When I owned the plug-in I seldom used remote charging facilities. On the odd occasion I did, I found the experience frustrating.
Due to a change in residence I don't have easy access to a charging point and so when it came time to change I went for a self-charging hybrid. This has averaged just over 50 mpg over several thousand miles.
Both vehicles are mid-sized SUV's.
In conclusion, choosing between full electric, plug-in or self-charging will very much depend on your intended use and access to charging facilities.
