First off triple fis are not balanced they are notorious for being v shaped with huge bass.
They are noob headphones for this reason they sell to noobs that want huge bass bump but quality is lacking. Just because there are three drivers doesn't mean anything if balance and quality lack. Second and most important the isolation is terrible because of the shape of the housing and the big round plasticy tips all suck. The shape is super uncomfortable and the cables are cheap memory cables. The build quality and isolation is crap compared to the big time items.
Fun fact: these originally sold for 350, now they sell for 200
Every year they go on sale at Xmas for 99 and people (idiots) on slick deals buy these up like crazy because nerds think Logitech is great and that they can flip them for a quick buck. In January eBay is flooded with these and they either sell used gently for 75 when people can't sell then at 99 after they try them out and realize how damn uncomfortable they are, and how tiring it is to have constant bass bump.