I'm trying to decide myself on the same gun right now. To me the choices I'm considering are
1. Talley lightweights
Advantages - lightweight, cost, less parts to potentially move, able to get the scope closer to the barrel.
Disadvantages- not able to move scope from gun to gun easily
2. Standard picatinny
Advantages - ability to move scope between rifles, 20 moa rails, looks cool
Disadvantages- heavy, expensive
Those are just some that stick out in my mind I'm sure others can elablrate more.