Keep in mind that I haven't tried any of those, and I am still a padawan in the seduction arts. Here are my two cents nonetheless:
I feel like #1 may get you receptions, but I feel like most of them will be neutral, as in they'll be thinking "oh, this guy said something different" and only answer your "are you having a good night?" question. I feel like the positive-to-negative reception ratio will depend on your fundamentals. If you're solid in that department, then I think you'll have more girls trying to qualify themselves. If you're far away from Casanova, on the other hand, I feel like you'll have more girls thinking something along the lines of "who does this douche think he is?", and replying with something like "yeah...why don't you go look around?" Furthermore, I would try to remove "I'm not" because it's a bit of a downer, and it may make you seem self-centered.
I feel like #2 would perform better if it was shortened. Areas where girls are dancing are usually be loud as shit, so what I would do is go up to their ears and yell (out of necessity) "stop dancing like that! My pants are too tight already, and you're not helping!". If you wish to be more elaborate and calm, then it's probably best to wait until they're off the dance floor. I would personally rather wait until she's somewhere quieter and calm, and open by complimenting how seductive her dancing is.
I feel like you have to be like RSD's Tyler/Owen to pull #3 off. Even then you probably won't see much success. I feel like the girls who will be receptive to this will be drunk and/or wild party girls at night venues or college parties, and you have to be nearly-bouncing-off-the-walls-crazy-happy to pull it off. I really, really would not recommend this. Even club girls can be resistant to hug openings if your fundamentals aren't solid, and you're asking for their breasts...yeah.
I also feel like #4 would work best with girls at night venues and parties. I would never open with this anywhere else. Again, fundamentals will be the main factor. With great fundamentals, you can probably move in for the bite/lick after her response, and she'll probably laugh and push you away. With anything less, I feel like the girl will be in a "okay..." state of mind after that script is run through.
The latest one feels very scripted. I would much rather: stop, turn around, and say hi, or wait until she's next to you, maybe a gentle shoulder-to-shoulder bump, turn head and smile, and say hi.
I would stay far away from scripts, gimmicks, pick up lines, etc. They may be fun and unique for you, but they probably will feel too generic, impersonal, and corny/immature even for the girls.
I feel like situational, direct, and indirect direct openers are the best.
Situational openings are pretty unique (you saw her shopping for a dress and you told her it'll look good on her). This way it feels more natural and more like a "it just happened by fate" kind of a thing. Plus, every time she wears the dress or shops for a new one, she'll be thinking about you.
Direct is great as long as you couple it with a genuine compliment, I think. Something like, "Hey, I just wanted to tell you that I really admire the way you walk. A lot of guys may prefer girls who walk like models, but I love women who walk like you because it shows that you're a strong-minded girl who can't be pushed around. (Her response). Look, you're really attractive and I must know if you're single." It shows that you're a confident man who cuts to the chase, and the genuine compliment is a huge plus.
Indirect direct is something that I haven't tried yet. Rather than asking a girl where the nearest Starbucks is RIGHT in front of a Starbucks or anything like that, I want to try telling a girl who's walking towards me that she dropped something. While she has stopped walking and is looking around for the "dropped" item, I would close distance and open with "I'm just kidding; you didn't drop anything. I just wanted to stop you so I could talk to you. You're really attractive (or a genuine compliment), and I was wondering if you're single."
Forgive me if my words or tone appeared very critical. I'm new to socializing ON TOP of being new to seducing =p
Good luck and take care.
