@Amethystpink grip is really dependent on the person. I know a lot of people LOVE Mighty Grip, for me personally, I hate it and it does absolutely nothing for me. I, personally, love Prince grip.

You might even end up having to mix grip aids to get the right aid for you. I have a friend who has to mix Prince and Dry Hands to get a good enough grip.

You'll want to think about your hands. Do you have naturally sweaty palms? Or do they only sweat when you get nervous? Here's a blog that might help you on your search: http://aerialamy.com/blog/grip-aids/.

Unfortunately, no one is going to be able to tell you which grip will be best for you. It all comes down to trial and error.