After BBUK's axe, the number of popular English language speaking BBs this forum generally watches have halved from six seasons/series a year to just three.
Out of CBB2US, BBCAN7 and BB21US, which season of BB has been your favourite this year.
CBB2 > BB21 > BB7
CBB2 was the only season I enjoyed, I quit watching 21 and 7 after a while because BBUS was getting unpleasant again and BBCAN has been crap this year.