Glad you like them, Mivo.

They're really good for the price, that's for sure. I almost bought another pair when they went on sale for under $100 a piece around black friday just because that's a crazy low price.

I have both the 305s and the 308s, and I can say that the hiss is decidedly louder on the 308s. It's fine if I'm standing back a few feet, but don't plan to have them closer together on a smaller desk, or the hiss is just too much. Since I built myself raised shelves for them to go on, the hiss doesn't bug me. But you'll hear it if your ear is closer than 2.5 feet. Your description of the very minimal hiss on the 305s is pretty accurate. I can hear it if my ear is closer than 1ft away.

the 5" have decent low end for the size. I mix with the 308s, but I'd be confident mixing on the 305s if I could quiet my computer and treat the room that I have them in.