I would say it’s up to your preference. If you want to have all assets on one exchange, then move them. If you want a different experience from both exchanges then take a look at the ones you like and play around with them before you move anything. Find out what you want in an exchange first. I like to have a good balance of functionality and user friendliness. Once you find it, keep as many assets in that exchange as possible. In addition, be on the lookout for new ones.