all these phones with better specs cost loads more money. and 3g is nice, but the accompanied data plan will cost, what, $50/mo? gotta factor that into cost.
with this, presumably, you can have a fun little tablet + wifi phone. less convenience, but a potential phone replacement if are constantly (home, work) around wifi hotspots like me. can't talk and drive, though.
for the record, i don't have one of these...or any type of smartphone, so my rants are basically theoretical.