Cannot Decide Between The Garmin Streetpilot C330 Or The Lowrance Iway 350c? This Is An Automotive Car Gps.?

I been beating my brains with this one, I like some features on the Lowrance, but I do not like the fact they have out dated maps and it sometimes freezes. The C330 has excellent reveiws, but it seems simplistic. Does anyone have any experiences with these units???The TomTom has some mapping problems I hear. I want something within the $250-350 range. Thank you!