Im a new user of bitcomet, previous to this I was a long time Utorrent user. I going to say up front that I like Utorrent a lot, I really enjoy its simplistic interface. However, Bitcomet has blown me away with functionality. First off, I was getting 1MB average download with the occasional 1.2MB burst with Utorrent. I have a 12 mb connection, so an average utilisation of 66% is pretty good considering I live with 4 other people. Since I switched to Bitcommet I've been getting an average of 1.2MB and busts of 1.4MB speeds, and increase of nearly 20%. That was enough to sway my favor even though the first few days were a little weird with it and how it worked. Thats not all, It has integration with the eMule network. Being a bittorrent user, understanding eMule has been a little bit of a challenge and i've put it off for now. But having access to a whole other peer network is amazing. Then you have the torrent exchange function. The ability to select and download torrents without having to use a website like TPB, is an unbelievably cool factor, and it expands by downloading torrents from other bitcomet users who also use torrent exchange.
Over all, I like Bitcomet over all other clients, and I especially love the bittorrent community. Seed for life :)