Back to the OP.
14X is definitely enough scope to make any shot inside 600 yds. But 18X or 20X might be an asset as you inspect the trophy in that final moment before you pull the trigger.
I place a lot of importance on value per dollar spent, and I have recently been doing some work with a Vortex Viper PST 6-24X. This one belongs to a friend and is above my budget criteria, but the Viper 6.5-20x44 which Doug has available for $279 is not. I expect it to perform as well or better than the Loopy 6-18.
