I've recorded videos of my best Phantom Time Trial times for all the tracks. They can all be found here : http://speeddemosarchive.com/Wipeout64.html
On the track Machaon II I can't seem to figure out the best strategy or maybe I just suck at it . The best time on Machaon II that I've heard of is 26"5 while I'm stuck at 27"5 so maybe there is still some shortcut escaping me here .