Do you need to make a decision NOW ?

If so, is FOSS THAT important to you ? IF yes, get the N9.

If not, WAIT until you have a chance to try the N9 for yourself. You will NOT be able to make a proper decision on how "sexah" a UI is until you get your hands on it.

In terms of apps - well - you have NFI what apps will get ported for N9, so you cant do a comparison either