I jus wonder....how come nobody actually admits hom much flex, hyzer, oat really goes into these "Straight" problem solver discs? geez boyz. we are throwing on a curve and there are no realistic straight lines.
I consider a straight flying disc to be one that resists turn-over when thrown hard, yet has a minimal amount of fade. It's true every driver will fade (if it doesn't turn over), but the later in the flight that it starts its fade combined with harshness (angle) of the fade is how I determine which discs are straightest.
Distance driver: Surge SS
Fairway driver: Teebird or Stalker
Midrange: Buzzz
Putter: Any suggestions? Haven't found one that will resist turn-over when thrown with power and still have a minimal fade. It seems to be one or the other with the putters I've tried.
Also, IMO, straight discs are not only good at being released flat and going straight, but they're also good at holding hyzer or anhyzer lines. I can release any of the discs I've mentioned on a hyzer or anhyzer angle and they will follow a smooth arc without too much fighting to fade or having a tendency to turn.
Basically, the discs I've mentioned are my favorite discs for these reasons and also my most used discs. Every other disc in my bag is more of a specialty disc used in circumstances that don't call for a straight shot or a smooth arc.