[orca-list] wich is the best combination for browsing the web?

[hackingKK <hackingkk gmail com>]

Hello all,
So many versions of orca, so many gnome versions and firefox 4 + firefox5!
Can some one make a small overview document about which is the right 
combination for prime time use?
Should I use latest orca with firefox5?  or ff4 still better?
Has any thing been done so far on the backspace not speaking removed 
character?
and if yes then in which version of ff and/ or orca?
Happy hacking.
Krishnakant.