Hello, hope this the right place for this question, sorry if it is not.

I am looking to get an DSLR for the family, so I can take pictures of birthdays, weddings, etc, I would also like the camera to take good low light photos.

I also want HD video to film my son.

I think I have narrowed it down to the cameras above but I can not really tell if it worth spending the extra money on the EOS 650D, compared with the 600D?

Do the cameras have similar lens mounts?
I am asking as I am wondering if I get the 550D that they may stop making lenses for it?

The camera will also eventually be used to take macro shots of mouths (I am a dentist not just weird...) so this also comes into consideration.

The lenses I am looking at I have put links up to and wanted to know if they were ok for what I need them for?

http://www.amazon.co.uk/...?s=photo&...6679086&sr=1-3

http://www.amazon.co.uk/...s=photo&i...838681&sr=1-14

Also, the HD video that is taken, what file type is it and what editing software can you use to edit it and how can you watch it on a TV.

I brought a HD camera (JVC) and transferring files and editing them was a nightmare and trying to watch them on a TV even harder, so that is why I am asking.

If you have got this far, thanks
Ozzy