Recommend your stud finder pls.

Mrs.adambabycakes

Do you have a stud finder that works well and is affordable?  I've never had to purchase one before so I'm not sure what to look for.  I live in an apartment complex where the maintenance crew isn't allowed to find the stud in the wall for me.  I would like to get a wall mount or anti-tip device for my tv.  Also, If you know to go about getting a wall mount for a specific brand of tv that would be great too.  I think I might go on the Sony website and check it out anyway.  TIA.