I vote for having both. There have been posts since the forum revamp that I want to comment on, but all I have the option to do is like. Having both would be good. As Rowan said, some people can't be bothered to leave a comment, but they might have liked what was said. When the rep system in place, those people couldn't leave their regards. With the likes system you can, but it doesn't cater to those who like to leave comments and 'secretly' dislike the post if they so choose. That's my piece ^_^