For fun i cooked a rom based on la4 with most of Sango's tweaks. It runs smooth. I made it very light and optimized in the sango's rom spirit. I tweak it for install my operator apn, mine are a little special, and a 1% battery mod.
La4 is a little more finished than la2. For example, the lockscreen instruction is translate now (swipe screen to unlock)
I didnt see lot of differences between la2 or la4.
By the way i tested modem provided by the last orange firmware and i came back on lp6. I made a speedtest with each one and lp6 is better for me.
See you !
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