...512 seems dumb when the atrix came with a full GB
Yet, according to what I've read, that full GB is not usable when the phone is not plugged into its obnoxiously expensive docking station doohickey. The phone alone, IIRC, still utilizes only 512 MB.
I was originally bummed the Atrix was AT&T only, but then after reading that, the TB looks much, much better in comparison to me.