Ok - this is not a truly either/or, uninformed request, so pls. cut me some slack.
Have reservations for Wallse for my husband and me and some visiting relatives (two to be exact, we'll be a party of four) for this Wednesday night. I love Wallse and have been a number of times, and often recommend it on this board. Visiting relative has read about Prune and would like to go there and, thus far, there is a table available. From what I've read on this board, I'm not inclined to choose Prune over Wallse (plus, the West Village is an adventure for this guy, let alone the East Village, gentrified though it may be).
Any reasons that I'm wrong about this choice - had heard generally good things about Prune, but further research left me querilous (sp?), at least as between these two restaurants.