I've been using my iPhone as an ereader for the last year. The newest Stanza update has caused the app to crash

which has me now looking for an ereader.
I'm looking at the Nook Touch ($79 at Best Buy this week) and the Kindle Touch. I'm trying to figure out how they work with Calibre though.
What I loved about the Stanza app was that it would wirelessly connect with Calibre and that I could view the metadata in my library on the phone. My husband cant get that feature to work on his nook app so I'm wondering how it works on other ereaders.
Some of my pdf/epub files are not main stream stories so I really need the descriptions that I save on the metadata in calibre to show up in the library on my reader.
So I'm really hoping that someone can shed some light on the functionality of Calibre with Nook and Kindle. I've been spoiled with the ease of use with Stanza so now I'm worried that I wont be able to get the same benefits out of an ereader.
Help?