tree line?

Do you prefer swimming and cliff jumping?

Fishing?

Are you interested in summiting Whitney or Half Dome?

Do you want to get away from as many people and be alone on the hike or are you ok with having people around you?

Are you coming in from the east or the west?

What time of year (There is a massive difference in where you can go between June and August)?

There are literally every type of option in the Sierra, but it really depends on what you prefer.