Bulletproof router

[Jones, Scott (GE Money, consultant)]

>Linksys WRT54GL with your choice of third party firmware. This 
>has been brought up many times and that seems to be generally 
>accepted as a solid solution on the cheap. I have had mine 
>since May 2005 (granted it was just the WRT54G then but same 
>device) and has been a champ ever since. 
>I've got other ones that family members use that have been 
>working for almost as long.

Maybe the answer to this is self-evident but would my device be
'workable' or 'upgradeable' or do I need to find a wrt device that isn't
locked, and with which I can work? 

Scott