I have to disagree with you, have you tried passive 3D, honestly Vizio seems to have best passive 3DTVs, I haven't seen anything that compares to Vizio so far. And you don't have to sit directly in front if it either, you can sit on the far sides and still have the 3D effect. Also the passive 3D glasses are your standard real D 3D or the IMAX 3D kind. The active glasses are the "horrible" ones.
Passive 3D has been a very pleasant experience at my house, I can only assume its because of the TV.
Try out both active and passive systems and then decide if its worth it. I'm willing to bet that passive 3D will not disappoint you because everyone who has visited my house and had the 3D experience always asks says the same question "How come it doesn't flicker? and its so smooth and bright."