The program is totally free and it's updated frequently, what guarantees top speed if your connection is fast enough.
BDGO performance is very similar to other P2P programs. That means it won´t take you a long time to get used to it. Its interface is very friendly and easy to use, so you'll be downloading files in minutes.
In short, BDGO is a good alternative to the well-know eMule and Ares. It doesn´t offer anything new, but it offers the same in a friendly way.