I don't think many would disagree that the G30 is, quite uncannily, one of the very softest shooting .45's for its size and weight. It is very comfortable to shoot and equally accurate with a nice capacity.
To those who believe there is NO noticeable difference in the....carry-ability ( not just concealability) of the G36 vs the G30, you just might be ill-informed. If not, fine and good, but most would agree that the 36 is much more comfortable to carry -when you even notice it's there.
I have heard many G30 owners rave about that weapon, but complain about how tough it is to conceal and carry around 24/7.
The G36 is lighter and smaller, thus a little heavier recoil and just enough muzzle rise with 230's to make super accurate Double-taps challenging. Other than that it's very accurate, a dream to carry and will handle a close quarter situation beautifully with a plenty adequate caliber.
It just comes down to your priorities. I shot both, loved both, but at the time required a suit for work. So I wanted the smallest, lightest, easiest to conceal and carry, largest caliber, low maintenance, no levers or hammers, most reliable pistol I could find and afford.
Glock 36 it was. Nothin but great things to say about that gun. If you alter it from box stock, you're always askin for Murphy to pee on you. So, if it can be avoided.....ya no. If you want to add a +1 it's all good just make SURE you get wolff springs to replace the stock springs on any mag you put an extension on that adds capacity. This will keep Murphy at bay and is much easier to do than it seems, once you figger' it out.
So just decide what your priorities are and purchase away.