My '04 coupe had the bad hazies.

I tried the Meguiar's PlastX Clear Plastic Cleaner & Polish stuff, but it made very little improvement - and within weeks they were as bad as ever. Maybe I done it wrong...

Searched through the threads here and found a recommendation for the Crystal View kit from Walmart ($20), so I thought I'd try that one. Scary stuff, they actually have you SAND the lenses, using two different grits of wet/dry sandpaper - basically, just like rubbing out a paint job. Final step was wiping on a new sealer coat which came in the kit. WOW! Mine STILL look almost as good as new, a year later.