Which do you find more acceptable?

Either way. They are entertainers earning a living.

Huh? They're both equally acceptable. Both gender of dancer is successfully carrying out the same job, probably for the same purpose - to entertain an audience. If a dancer, whether male or female, isn't a good dancer, no need to tip.

Actually I think the male dancers are more acceptable as usually the girls gout out as a group for a fun night out, while the guys tend to go for other reasons.

as a male males dancers is worse than female dancers. but both should be avoided.

Both, as long as the one who pays is single and the one giving the service understand that it is work. Work can be fun.

Neither.