Personally very, very happy that vegan is such a trend; places are getting so creative and the food is such a change of pace from what we're used to.
Planta has some really great stuff - like their noodle dishes, salads, thai coconut dessert, and things like kimchi spring rolls. Some regular stuff that's good, but not at all worth the price - like cauliflower tots, tacos, and veggie burger. And you do need to accept Yorkville prices - the cheese plate, for example, is creative and tasty, but super tiny and like $25. And we blew through almost $400 as a table of four.
The service was also impressively bad (but I know that depends on who you get). Slow. Didn't let us know they had specials. Didn't let us know there were menu changes. Never came back for refill drink orders etc.
But it's a great space, with really high quality food, and some really well thought out dishes. Highly recommend for vegans as a change of the usual, and for meat eaters to try, but be sure to order something you wouldn't normally eat... And give the insanely Hipster cocktails a try (bourbon sour with charcoal, or green tea kombucha tequila, for example).