All down to ones personal choice and to how much ones is willing to spend, like other things "Rifle Scopes,Camera Lenses, Binoculars and so on it is the quality of the glass or polished mirror that counts". Read as much as you can about Refractor and Reflector Scopes, look at posts on YouTube and so on. Then look at your pocket and try to find the best that will fit that you are willing to give at this moment. In the end it is your money and choice.
Good luck and all the very best