You know, most people prefer the 10/31/98 or especially the 6/11/99 match, but for me, the 1/3/03 Misawa/Kobashi match is not only the best match they ever had against each other, but it just might be the best match i've ever seen - period.
Flawless execution, worked at a ridiculous pace, memorable spots (the Tiger Suplex off the ramp, Kobashi kicking out of the Emerald Flowsion, Misawa nearly beheading himself on the guardrail, the BURNING HAMMER at the finish), red hot crowd, historical world title match, it really has it all. Perfect match, *****+.