Newbie to xbox, a couple questions. (Yes i read tutorials)

[passat81]

I've narrowed down my modchips to the Xecutioner Lite, Pro, and X-bit.

The main confusion I'm having is with the bios flashing.

If I have an Xecutioner Lite, it comes with a bios already installed on it. Will this bios allow me to ftp to my X-box with a computer? Or will I still have to install the evoX dashboard?

If I do have to install the evoX dashboard from the question above, am I correct in saying that I am using the bios from the Xecutioner, but the dashboard from evoX?

If I do get a bios that works, is there any need for me to ever flash the bios again? In other words, if it works once, will there ever be a need to change it?

And finally, what modchip do you reccomend out of the three I have narrowed down?

Thanks,
Derek

P.S. I'll also be wanting to use Xbox live every once in a while.