This one of those buy the best one you can afford suggestions. Personally I want low light capability so it means having an illuminated reticle. So a non battery operated illuminated scope limits your choices. Non illuminated well then your wide open in what to buy. There are other factors like CQB conditions requiring a wide field of view. I like variable 1.5 x 6. scopes, a 1×4 would be fine as well. But you could go with a reflex or holographic and a separate magnifier.
Luepold tactical scope
EOTech with a separate magnifier