Reliable Car Charger for iPhone 4/4S ?

I have a couple Griffin Powerjolt Dual USB chargers. Each usb port provides 1A according to their specs.

For less than $1 more, you can find it with an iPhone charging cable (also on Amazon).

Regards,
Tom

I use this in my car... haven't had an issue with it at all in the past 6 months or so that I've had it

Oh, and I always leave it plugged in, just attach the cable when needed, lazy way ftw