I'm picking up a new bike. My giants have 120 8 degree rise stems. While the obvious answer as to what stem to get in order to keep my fit the same seems to be get an 8 degree rise stem, a cursory glance didn't turn I'm much. I don't even really know if my obvious answer is accurate. Further I've been reading stem reviews and can't tell one from the others. I have a set of the same bars as a start. Thoughts? Suggestions? Help?