on tablets this size, i'm liking the transformers slightly heavier feel and concave-like back versus the lightness and the flat of the 10.1, even the new prime has a slight concave back which i find easier to hold. than a straight flat back. YMMV
if your going to be passing the tablet around (to show off portfolio) might be lighter is the way to go for your application.
but if your looking for screen quality:
also
tf101 panel reviewed against ipad2 panel
cant seem to find the 10.1 panel review i'll post it when i find it
found it