Vodka Straight..
I'm telling you guys as a part-time PROFESSIONAL drinker..
By Professional, I've had to drink as part of a job.
All of these mixed drinks, etc, just hinders the amount you can drink, and greatly increase the odds of you throwing up..
I deal with bar girls almost on a daily basis as well, they need to drink beer because that's the typical use-case around here. However, they said if they Had a choice, which they often don't, they would choose to drink straight vodka as well.
Vodka is cleaner, pure and simple.