I just want to know, what is the most safest way to transfer an item?

I'm only asking because I asked someone, when I bought an item from him, to send me the specific item as a gift. He said it's the most unsafest way to give an item, and his methods of giving are only done through trade. He has his own website and it seems successful.

Then on this forum, I bought an item and told the guy that I'll set up a trade, and he said trades are the most unsafest way to send an item and that gifting is the safest way. He also said he sents SuAPs through gifting and everything was fine.

What do you guys think? o.o What is the most safest method?