IMHO Triakis is somewhat over-rated, at least for lap time trials, and at least for my flying style
It's definitely possible to get a top three or top five time in the PAL version of the Wipeout Pure with Goteki or Zone, at least for the tracks I have worked on recently. In the NTSC version, you can probably get the number 1 spot in some courses.
Not that Triakis isn't a great ship-- but it's benefits are confounded by the fact that it's a favorite of the top racers, so it tends to dominate the upper levels of the charts.