GXR vs. NEX 5N

I am trying to decide which camera I should purchase....

Currently, my choices, which may change with the eventual release of the NEX 7, are:

The Ricoh GXR with the GR Lens A12 (28 mm F2.5)  or the S10 Lens  (24 - 72 mm F 2.5 - 4.4)

OR

The Sony NEX 5N

NEX 5N has amazing low light performance but  poor controls while the GXR has some really cool accessories. The lens selection for the GXR is better at the moment but the selection of E mount lenses is growing.