Consider checking out websites of makers of graphics software for examples & tutorials of how to make lower thirds. New Blue, BorisFX, After Effects & others.
Concur with comment, what do you want to shoot? There is no one best or even better. Different horses for different courses. Or put another way, Ferrari is a zippy sports car but a school bus is better for hauling lots of people.
Pretty safe to disregard any comment pontificating "future proof" digital camera. None of them are. Moore's law & all that. Want a future proof camera? Shoot film (but not Kodachrome).
Include microphone(s) in your budget. If you can't hear them, you might as well watch Charlie Chaplin.
Happy shooting--a context sensitive statement if there ever was one.
Robert's answer is part correct, part incorrect & part maybe correct. Avid recently released MC 8 (8.2 actually) c. Oct. '14. It's available as monthly, annual & perpetual license. Student pricing is very, very reasonable. The student and commercial programs are the same. The only differences are the end user licensing agreement--student versions may not be used for commercial purposes--and the academic version no longer comes bundled with software or, if it does, it doesn't come with very much. The Production Pack is available separately for $99. It has NewBlue Titler Pro 2, iZotope Insight & Sorenson Squeeze. Check up on which flavor of Squeeze is in the pack. It may be a lite version. You need to determine if it meet your needs.
Avid DVD was end of life as of MC6 if I recall correctly. Avid FX went away with MC7; however, Avid FX is Boris Red. It is roughly equivalent to After Effects and can be purchased separately.
You do not want the media management version or Newscutter. They're for facilities and news departments. I do not think Symphony is available for students, only commercial and academic institutions. At least that was the case as of MC7.
The Avid user forums are an excellent resource. http://community.avid.com/forums/www.videoguys.com has useful information.
Try the tutorials at http://gaijin-eyes.com/
Hope this helps