Hi,
i did order the adxl345 but from china. Although they physically worked, their output was inconsistent. Eventually i went for the adxl335 (analog).
Also, i went for local datastorage on a sd card. Could have been nice to be able to monitor the incoming data remotely but i didnt have time to implement (and program) a xBee.
I do use the mega ADK, so i might use my phone for transmission. Than i could use wifi which will be fast enough.