Difference 4.1.2 miui and 4.2 miui ported

[hispanico]

Rom for S2 rel 4.7.11, there is also 4.2 (miui ported) and i would know respect 4.1 (miui):
- stability
- performance
- options
it's good and if is convenient install it in alternative to 4.1 miui

Thank
Hispa