Anything between 150(though this is the lowest) and 175 is good for me.
Personally I would prefer girls lower than myself.
I could be lying and saying that Height doesn't make a difference, but lets just play our cards open... If you're 186 like me, it can be difficult falling in love with a person that is 150.
There is ofcourse situations where Height doesn't matter. But at first sight without knowing the person, Height does matter in your first impression.