[Dommer]

Well I think you should only be playing more hands against tighter players if you are going to bluff them. If you try to play for value you'll just get slaughtered (which is what I do). Vice versa if someone is a pay off machine you're getting a lot better implied odds to play poorer hands so I tend to loosen up v them. But even then I'm only playing poorer hands to flop something really strong.