differences between FW 270 and 276

I just did a full diff between the 270 and 276 FW code to see what was changed. Overall, very little:

1) Support for the new flash chip used in recent RT-N66U
2) Different wireless driver (276 driver was compiled on July 31st)
3) A block of code that deals with region regulations was removed (unsure what it does exactly)

I was wondering what was everyone's performance/stability results with the wireless signal when comparing 270 with 276? Wondering if I should also switch to the 276 driver in my own FW.