It's odd, but I haven't had any complaints about the rain sensing wipers on my SEL at all. Where I live it rains eight months out of the year - and goes through pretty much every permutation of precipitation imaginable in the process - and once I got the sensitivity dialed in they have been perfect for me.
According to the service manual, a failed (or disconnected) rain sensor will revert the wipers to standard intermittent wiper operation with the sensitivity control thumbwheel becoming the intermittent delay control. I guess that's always an option.
2012 Red Candy 5-Door SEL 303A (built 2/27/12)
2012 Sonic Blue 5-Door SE Sport 203A (built 9/13/11)