Thanks guys for all the input. I just got my batteries today and I had to give it a try this evening. First I will say that i did love my E5 in the 6 cell configuration, it was my favorite all around machine. But only getting 4 min flight times at 2400, and it always felt a little heavy for the blades in the air and needed to run atleast 2300 for it to not feel sluggish. I have an E7SE with a Scorp 4530 540 and that is a real power beast, but a little intimidating to try new stuff with due to the size and cost.
With that said the E5 626 12S is by far the best combo for my style I have flown to date. It seems to have all the flight performance of the E7, but without the intimidation factor. I wanted to take it a bit easy on the packs for the 1st flight but that lasted about 10 seconds as i couldn't contain myself. Threw everything I could at it at 2260 head speed for 5 min and still landed with 30% left in the packs! I was trying GensAce 60C 3300s for the 1st time so I only bought one set to try them out before I committed to more, (I normally fly Thunderpower). I was really happy with them, they held their voltage really well for the duration of the flight with minimal ripple. I think i am going to buy a few more sets and this will continue be my primary heli.
If anyone is on the fence about the conversion, just do it! The E5 is a great 12 cell 626!