I use GSAM Battery Monitor a lot, including for development work. I'll vouch for its authenticity and reliability, it's totally legitimate.
Pleased but not surprised by your battery life. Recall my battery standby graphs on my previous generation phone when you were shopping. HTC has been nailing it in this area for some time.
Fwiw, I switched to Nova myself almost a year ago. I keep my screens clean, and scroll the dock. I keep my apps organized by folders there. I'll back your recommendation on Nova 100%, fwiw to anyone as a second opinion.