There's a few posts sort of on this already but i think anymore then 12u is stupid. I did 10 which was good 4 me coz i didnt c the point of doing work 4 something which wasnt going 2 count. A lot of ppl i know did 11 but i think different things work 4 different ppl. Personally, i found 10 just right
13 - just right. i wasn't as stressed as i would have been if i did less as i knew they wouldnt all be counted. i started feelign the stress of having a lot of work though during exam times, especially just before the hsc.
i read somewhere that a really high percentage of ppl who got 99+ uais did 13 or more units.. cuz many did like 4u maths, 4u english and 3u something else.. then needed something else to fill up their subjects cuz u need to do 4 different subjects to be eligable
that must suck.. but i guess it could be a fun subject if u dont really need to work in it
i do 11.. its great