Right. How many of this thread has OP started?
If the gun does what you want, use it. If not, find another. Why do you need the permission of your friends on the internet to run what you brung?
If you have a 43X and a MC1sc, you already know everything you need to know about your experience of the Mossberg vs Glock, functionally.
If the 43X does everything you want, except that it's hard to conceal, learn to get better at dressing around it and/or not caring. Nobody can see your subcompact 9 if you're not wearing muscle shirts.
If the MC1sc does everything you want, except that it's not a Glock, then either get over your brand loyalty, or dump it for a 43. If you're worried about reliability, run it as hard as you can until you've proven it will/not do what you need, then go back to the top of this paragraph.
I suppose the only other question is "does this gun fit your hand better than that one?" In that case, rent a 43, run a couple mags next to the Mossberg and see if it fits. You're literally the only person on the planet that can answer that one.