I'd agree
The IBIS is way ahead of the A7rII I owned for 6 months
I've taken a few clips of 0 artistic merit to test and even without stabilized lenses or post-processing stabilization it's really smooth handheld.
Will try and post something soon.
Just have the kit lens and 25/1.4 right now.
Debating a wide lens, though the kit lens is shockingly decent though slow in terms of aperture.