For me, I think the Encores work best with short barrels (10-12 inch) and so only look at larger bore pistol calibers like .458, 452, .500 etc. Basically 150 yard hammers. For longer range work I prefer the XP platform of a bolt action. More accurate, easier to tune, etc.
So if you don't have a need for a short range hammer, I'd sell the Encore. Like you said you really only need one gun and the xp will become your favorite I'm sure. I know I love my xp Kirby built in 7 SAUM.