I've had both and still have a 1v & 1n.
I never noticed a big difference but one thing to consider is the 3 is not 100% of image.
I ended up getting rid of the 3 as I didn't really need it and I preferred the small form factor and snappy af on the 1n.

I use the 1n without booster for when I need a smaller camera.
It ONLY has 5 af zones but is quite accurate and snappy.