There's the key.
For my style of play I would reach for my Fuse or Comet. I wouldn't even consider an overstable mid for that shot. Either way your playing off your own knowledge of how much spin you put on your shot, the relative stability of the actual disc you're throwing, and you're judging the angle according to your own experience.
Please do not try to argue that a Vector will finish straighter than something like a Comet/buzzz/whatever... It's a fools errant and at that point you've traded a rational argument for a rhetoric masturbation.
Cool your jets el capitan, you were making it sound like your way was an absolute, 'tis all.
I don't know what a fools errant [sic] means but a disc's stability is subject to the guy throwing the disc, for my wuss arm a Vector wouldn't finish straighter than a Comet but for a more powerful thrower it might. At any rate, I don't think the Vector is that overstable that it can't be thrown on a frozen rope by any mortal.