Started with the bolt now have the charge. they each have + and - depends on what you prefer.
Had to get charge due to reboot in order to use it as a phone plus tons of other software issues.
Charge has better battery life and screen for daylight use. worse software and the power button in on the right and always turning off phone by accident. you will want a software replacement like launcherpro.
Charge is set and forget. HTC is worthless for help or product support they don't care one bit it does not work. 4 weeks with rebooting issues and they cant yet tell us when the problem will be fixed the product should be taken out of stores. I made a 911 call and moments later the bolt reboot. I got lucky but maybe some others will not.