Personally i love it when she gets on top of me or doggy style. But different people have different preferences. No position is the best, it just depends on what is comfortable for you and that would be best for you. You can also ask your partner which position they prefer and try that. If you need ideas, you can read some from this website: https://www.womenshealthmag.com/sex-and-love/a19943165/sex-positions-guide/