Flight Battery Weight

I have been flying a mini-p for a year now using 3s 2200mAh packs that weigh in around 185g including the wires and plugs. For me, the heli is tail heavy with that pack on it.

For those of you who have a well balanced mini, what is the weight of your flight packs?

I have been thinking of going up to 4s and was looking at something like this:

http://www.hobbyking.com/hobbyking/s...arehouse_.html

which have a 239g all-up weight, OR something like this:

http://www.hobbyking.com/hobbyking/s...arehouse_.html

which have a 275g all-up weight.

FYI, I fly with low headspeed, sport flight, lots of inverted, light flipping, and things like that. Would like to get longer flight times.