The are few Van Hagar songs that I really like and they're mostly on 5150. Actually the two songs off that album I like the least are your two highest rated.
My ranking for the albums:
Very good still, deserving of classic status:
Women and Children First
Enjoyable but not essential:
Mediocre but listenable:
Mediocre but listenable if you chop it into two or three parts so it's easier to avoid boredom:
A slog with no really good songs, but I don't actively hate listening to two or three songs in a row:
For Unlawful Carnal Knowledge
I can't even imagine what it is like to enjoy most of these songs, nearly all of them are awful:
A different Kind of Truth is probably around 5150 level, I just didn't get around to it and have only heard it a couple times.