I've never had a bad experience with US customs officers.
The one time I do a package run to get MY package and only mine, they pull me aside to inspect my car... the guy dumps my gym bag all over the inside of my trunk and leaves it a fucking mess, gives me shit because I had my gym bag with my cause I left from work, and almost locks my keys in the trunk, in fact, he slammed the trunk lid onto my keys where he left them in the channel, not even saying sorry, just looking up at me with a 'MEH' look.
I've been hassled far more by CBSA officers trying to get back INTO my home country than the americans hassle me for visiting theirs.
Nothing is more demeaning than someone who automatically assumes you are a criminal, especially when their tone of voice and body language in addition to their rude, indifferent dialog.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.