I used it for AS and found it quite good, now im in the same position as you whether to buy it for this year. What exam board are you doing?
im doing aqa, they dont have the full course for year 2 aqa, as they only have 85% of the aqa year 2 course, but fill the gaps.. ill just do the stuff from edexcel if i have to.. as the exam board content is essentially the same as i researched.. But yeah, just got it today, so ill smash through the micro stuff, as ive got year 1 and 2 micro mock in two weeks