Well, I got home from work this morning and went ahead and charged it up to 100%, then went into recovery mode and did the cache wipe and then a data factory reset.
Once I did the initial setup using set up device as a new phone, I did the settings in the WiFi and turn syncing off on most everything but what was needed, like gmail. Used Wifi to do the updates from google play and Samsung Apps, redownloaded the themes I liked. etc, by the time I was done my battery was down to 64%. So I charged it back to 100%.
By the time it was done charging it was 9 am, so I unplugged it and went to bed. Got up around 3:30 pm and checked it, it is 99%, now at 4:50 pm it is 98%.
Haven't really used it much, but at least in almost 8 hours of sitting idle it only went down 2% where as before it was around 4% to 6%. Can't remember exactly I do know previous days if I let it sit idle for that long it was more than 2% lower.
Cant wait to see how it does after calling, texting and checking web sites and youtube.