Most people find PROP and PTC bitter, but not unbearable, while others don't taste it at all.

WSJ: People Who Taste Too Much

It's certainly not unbearable, but this isn't something you're going to slip into a bag and pull out on the subway to read with.

ENGADGET: Samsung ATIV SmartPC for AT&T hands-on (update: video)

It's not exactly smooth sailing on the 1.5GHz CPU, but the lag never got unbearable in our brief hands on time.

ENGADGET: Samsung Galaxy Rugby Pro for AT&T hands-on Mobile