It's Final Conflict, not Final Countdown. My favorite event was Bushido 9. It had the 1st 2 rounds of the LW and WW tourney, with some great action packed matches. It was a 4 hour event with only 1 really boring match which was Minowa/Baroni II.
Some of my other favorites are the PRIDE Grand Prix 2000, PRIDE 10,
PRIDE 25, Final Conflict 2003, Total Elimination and Critical Countdown 2004, and Shockwave 2004.