It's not just a matter of magnification that determines whether I can hold a binocular steady or not. The actual size, weight, balance and ergonomics, for me, is also important. I could never hold the tiny 7x Curio steady enough to enjoy them, but have had no problem with my 8x VP, which weighs just an ounce more. The VP is a bit bigger but still compact, but because of its ergonomics, is easier to steady, in spite of having slightly greater magnification.
I own both the 8x42NL and the 12x42 NL which are both much bigger and heavier than the VP, but because they are so well balanced and easy to hold, not to mention the head rests, I can keep them equally steady. Therefore, in most situations, I will reach for the 12xNl more often than the 8X. There is something about the AFOV and the 12X magnification that continues to WOW me.