I'm looking for a scope for my Rem 700 Varmint in 17 Fireball. I need to keep the scope cost to about $300, so I'm interested in the Bushnell Legend Ultra HD 4.5-14x44 and the Vortex Diamondback 4-12x40 AO. I definitely want an AO (or side focus) scope, and these two fit the bill. For those in the know, which scope would you rather have for a 17 fireball (shooting out to 300 yards or so) and why? Any other scopes in this price range I should consider? Thanks!