Let me be the first one to reply to your first post since i am one of the nice guys on this forum. (shut up you two behind me!)
The reason for the excess aircraft noise(which we all love on this forum) would be because
#1 a new maintenance company has just moved in near the threshold of rnwy24 and it is the closest to do run ups.
#2 the wind has turned westerly because change of season, resulting all aircraft departing into wind as required.
#3 They all trying to piss you off but not realising you already love aircraft noise so they are trying harder.
Cheers, i hope you will be one of us one day!