First one I ever drove was around a decade ago, it was my buddy's E90 335i xDrive. He had a tune on it, but it was mostly stock. Loved the power and the way it felt, but at that point in time, it was definitely not the car for me.
The second BMW I ever drove was my X5 M before I bought it. Had it shipped halfway across the country without ever driving one first. I guess I know what I like!