I would fall into the 85% area. Something I found very interesting is that once I started leaving the I-pronto continuously plugged in I no longer have any of the problems I was having before. When I would unplug it to use it then plug it back in overnight it would take hours to process the config file every morning. I would lose sound. After about a week to two weeks I would have to force an update to get it working again.
Now, leaving plugged in all the time its like its a totally different remote. Yes, the bugs are still there but I think running off battery power has something to do with it. Hopefully, philips will fix the major bugs soon. It's been awhile since the last update.