First of all, why haven't you shot your carry ammo in 3 years? Did you even test the SXT's before you chose them for carry? Are you sure that they shoot to POA? Are you certain of their reliability in the weapon you are carrying them in?
Any decent JHP round will do the job if you do yours. For that matter, so will FMJ, but carrying any round that you have not tested through the weapon and subsequently trained with on a regular basis is downright irresponsible. Shoot what you carry, carry what you shoot.
I really hate reading stuff like this. There is nothing in the OP's post to indicate that he hasn't shot his carry ammo in 3 years, that he failed to test them, that he's not sure they shoot to POA, or that he doesn't know if they are reliable.
About 3 years ago I bought a quantity of Cor-Bon 40S&W 135gr JHP for my HK P2000. I bought my first 20, made sure they functioned, then bought 80 more to test and, after they all fed and fired without issue and to POA, I bought 260 more. I have rotated those 260 through my 4 mags, with the remainder in storage and the oldest being shot from time to time to "remind" myself how they feel. Now, realize, this means that I do have some carry ammo that is 3 years old, and heck, I may start thinking of replacing it, too - so my situation seems like it could very well be identical to that stated by the OP.
Why take such an adversarial, accusatory position without any real basis for doing so? This is THR, we should be a community here - your response really undermines that sense of camaraderie, and I'm offended on the OP's behalf.
Also, as for the "shoot what you carry, carry what you shoot" business, yes of course I agree that it is important to shoot what you carry from time to time... but by the same token, I can afford to shoot twice as much by reloading as if I bought CHEAP stuff in the store - and about 4 times as much as if I ONLY shot Cor-Bon. I have to say, developing skill and muscle memory by shooting as much and as often as possible is more important than always feeling the exact same recoil impulse or seeing the same muzzle flash or whatever. I also shoot a great deal of .22LR, which, although it feels nothing like any of my defensive handguns, has probably contributed more to my pistol marksmanship than all other handgun shooting I've done combined, period. You may be independantly wealthy, in which case of course, shoot whatever you like. But to those like myself with limited resources, we make do the best we can with what we've got, which means shooting WWB and reloads ALOT more than shooting Gold Dots or Cor-Bon or whatever.
Now to answer the OP's question, Federal 230gr Hydra-Shok in my 1911.