
It turns out, qBittorrent is the fastest amongst them. Why? That's a very good question. I tried all of them without limits (connection/etc) and then fine-tuned them. No real difference. uTorrent comes with ~1.2-1.3MB/s. BitTorrent is about the same speed, Vuze brings ~1.3-1.4MB/s. qBittorrent provides 1.5MB/s by start and goes above that (~1.6MB/s).
Don't know why, how, but I love it.

Kudos for the Windows installer and the people who made all this possible.