You're forgetting the most imporant things for a sin.
To be a great sin you need.
1. A really good graphics card
2. High FPS, and low Ping
3. A good internet connection
4. Ok combo
5. (this one is optional / I never used one) a pedal...it's what the pros use. xD
So if you have 1-4 go sin, if not go Archer