Correction, iP4's issue is green spot. Same shizz as our pink spot thing. I had it back when I had my iP4, my brother still has it. People who don't have it are simply not looking out for it (and are thus blisfully unaware, which is a major illness amongst iDevice users).
It's the AWB part of the cam not really being able to cope with lighting conditions, that's all.
And about JuiceDefender, I actually reccomend using Green Power. JD is process intensive and might sometimes eat as much as it would save, green power runs light.
UNLESS you need the advanced features of JD that is.
And yes, I have bought both (JD Ultimate summore) and I ended up ditching both for Tasker + profiles. Works best for me and saves a helluva lot of battery on standby. BUT tasker is a PITA to configure so I usually just reccomend Green Power.
And lolz, the Samsung exbatt will NOT fit the battery case. If the droidax is similar in design with the Samsung battcase I had (looking at the pics it sure seems so), it can't even take the 0.3mm extra thickness of my BSE skins without the port stressing out and breaking. The battery compartment of the case bulges inwards to fit the curve of of the SGS2 and there lies our problem.
You can try though.
I once used the 2x battery free, din't really work so i ditched it. After rooting my phone my battery life was better with tb freezing some bloatwares, will check green power out
Yea i doubt it would fit perfectly too, since the extra thickness cannot be ignored. Will take to the store to try though, if i have the time.