For taking i nearly always take a bit of dominance and start on top with him on his back. Normally this is because it allows me to control things to take time and avoid pain. Guys (even i do it) tend to want to help by pushing in but I find its better for me to use gravity and relax onto his cock. After a bit of rocking, once im ready i hop off and bend over.
I tend to prefer doggy on the bed as it normally creates an angle where his cock is running over my prostate area while he's thrusting. This generates mass precum!
I have had a guy stand up on the bed while i was in doggy position and that was really hot but he came pretty quick.
I also like being on my back, legs up. Normally i wrap my arms around my legs to hold in place while the guy goes for it.
For giving, i prefer doggy style. Probably because you can see whats going on ;)