I can answer this question. I've been on viibryd/vyybrid for about a year now and it's going ok. I take it in conjunction with bupropion. I think viibryd has fizzled on me, but when it worked, it really worked.
If you do decide to try viibryd, always have something to eat while taking it because you'll probably puke if you don't. I know I did. I also have headaches, but I'm not sure if it's from the drug or just a part of my depression.
If you can, try to get on the prescription savings program from the manufacturer. Only 15 bucks for a 30 day supply. Much better than paying 80 something dollars with insurance.
Cheers and I hope viibryd works well for you.