When starting with clips, just buy Shimano. After using them for a good while, and you’ve decided which traits you like and don’t like, start looking at other brands.
Time are great but the extra float isn’t necessarily a good feeling when used to having no float at all. The extra angle needed to unclip also might not be helpful for a newcomer. The bars on them are also the sloppiest things in the world if it’s all going wrong!
CB have their infamous reliability issues, but the lack of adjustment might be a problem. With Shimano (and Time now) you can play about with the tension so that you find what works for you before committing to one setting.