Someone got in our van last night and swiped my week-old Stratus 5. They left the dock, the power cable, and the cassette adapter (Gotta love stupid thieves, what's the head unit of a Stratus worth by itself??). Anyway, I was only planning to use this on family trips, and turn off the sub when we're not using it. (And it's a backup for the inevitable death of my S50.) On eBay right now, I can get a "new" Stratus 3 for $10 delivered, or a Sportster 3 for about $24. Any significant reliability problems with those units, considering they won't be heavily used?