Interesting....prior to reading any replies I did the math and became concerned about your arrow weight as well......I can see the speeds with such a very, very light arrow.....I can imagine how much faster you'd be with the Allegiance and the Trykon.

That being said, the Switchback is a great bow. I shot it heads up with the Trykon, Allegiance and Tribute. I wanted the Switchback to impress me to the point I wanted it to be my choice but it didn't.....I wanted it to and I did like it very much but I ended up putting $ on the Trykon and then replaced it with the Allegiance....The Switchback was the slowest but it was also the quietest...they were all equally smooth and vibration free...