Both are safe and you won't have problem with them. If you're worried about getting hacked, it's because of your negligence. Don't input your seeds to any forms online whether you use ledger nano s or trezor.
About PC having no anti virus, there's a chance you'll be hacked by those copy paste address attack. Otherwise, you're free and safe because these two are the most reputable. Btw, I own a Ledger Nano S and its still working.
First,I didn't quote all who commented in this thread because it would take too much space,but I want to thank everyone who helped with their comments.
@jossiel I plan to keep seeds words written on paper and stored on safest place possible.
I have anitvirus,but I also use,well...pirated websites very often and I often have viruses,but I remove them frequently.
I know there is a morality issues with that,but I mostly use them to try product before I decide if I'll going to buy it or not.
You said there is a chance I'll be hacked by copy paste address attack,what did you mean by that?