They are both great. so heres
my thoughts on PC v. Mac
I just go with Mac, because my sony windows laptop always get viruses, having issue externally in the hardware drive, it get outdated really quick.
I changed to apple in 2011, I had to quit all the great 3d online games (probably the reason why i play graal) most games were only for windows version and most of developers prefer coding on windows over mac.
For normal daily user like me should just stick with Mac. It's simple, fast, it's fairly good and light if u have macbook air. I had them for 2-3 years, like again, never had issue with viruses, fairly fast, no external hardware problems, not many games to play but still great for people who has to use it for work purposes.
For iOS v. Android
iPhones are very easy to break, u all know. Android is just too complicated, too many different versions, phone types, too much settings. Android is like a PC in ur phone. iPhone, fast, does what it says it does. fast touch screen. BAD battery life. Other than that, it's great for normal ppl like me. I had 3 different android phones, it sucks imo. I went to Samsung store few month ago, samsung galaxy was little behind but its kinda catching up, they just have to do something about that touch screen.
My school has a lot of technology, like they have ipads for 9&10th grade for educational purposes. Even though kids break rules and download games on it (so apple need a new ios for schools only). I use android tablet for computer science, but it has a terrible touch screen sensor and slow af