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I have found line memory an issue once you hit around 15 lb CX/CXX but below that there is little to none.
What big game line are you using? I have a $25 BPS gift card burning a hole in my pocket and figure it never hurts to have some extra line handy.
I spooled up some 8lb cxx and took it rite back off after one trip. Worst line I ever used. Way to much memory it was so bad it would wrap around my rod tip.
Must have gotten and old, overheated or misspooled setup... I have never seen any major or out of control memory from CX or CXX until it gets 20 lbs or higher. Even 15 lb can be hit and miss but usually works decent on bait casters, and 12 lb and lower for spinning reels.