In search of the perfect lap timer / video system for Gen V

[VENOM V]

Hi guys,

I've been using Harry's Lap Timer (Grand Prix) on my iPhone in combination with a high accuracy GPS and a plug-in wireless OBD module for speed / throttle / RPM overlay. Trouble is, it works about 1/3 of the time on the Viper, about 3/4 of the time on the Camaro. I get "unknown video error" and other errors. Sometimes it records lap times but not video. I'm tired of fussing with it and am ready to upgrade. Here's what I'm looking for:

1. NOT a lap timer application in a phone, something standalone and more high-end. I've tried several phone apps and I'm ready for something more serious.
2. Portable - I have two track cars and want to move it quickly and easily between the two.
3. Integrated video and sensors, hopefully all in one self-contained unit
4. Easy to use and process data. Easy to start / stop at the track (very important!). Easy to load track maps or record a new track (For example, Thunderhill 5-mile is so new it probably doesn't exist in many canned track maps). With Harry's it's nearly perfect and automatic- just overlay the video with OBD port data and the video is ready with the push of a button. If Harry's were more reliable, I would continue to use it.
5. OBD data - speed / throttle / RPM etc.
6. Accurate GPS
7. A bonus would be if it has an easy way to stitch together your best lap, corner-by-corner analysis, Etc.
8. Easy to use. I said it twice because this is the primary goal!

Does something like this exist or am I dreaming?

Thanks

Todd