Nikon used to call its cheapest center focus binoculars Action, and its more water resistant versions of the same optics Action Extreme. It looks like to decrease confusion, they are replacing "Action" with "Aculon" for their non-water-resistant models. Nikon Action binoculars do not have image stabilization. I guess the "action" part is that center focus is faster to adjust than individual focus.
I have a pair of old version 7 X35 Nikon Action binoculars. Very good center sharpness, with sharpness greatly diminishing in the outer two thirds. If you want better edge sharpness, you need to go to more expensive models than Action Extreme.
The 16X50 will have more magnification than your 10X50. I would guess it probably follows the previous Action series pattern of very good center sharpness, with the outer portion of the field useful only as an aid to aiming. The 16X50 is supposed to come with a tripod adapter, and you will need it at that magnification. Just like with cameras, cheap crappy tripods perform poorly, and you should be expecting to pay about $90 or more for adequacy.
The $100 Manfrotto Compact Advanced Aluminum Tripod could be good. Measure your daypack to find out if its folded length of 17.3" will fit. If not, some more compact models include the more expensive Mefoto or the Manfrotto Befree. The $65 Slik Sprint Mini II is compact, inexpensive, and very good quality, but its height could be inadequate unless your only use is sitting, kneeling or lying prone.
The $90 Slik Sprint Pro II can be a good choice, if its 18.5" folded length is not a problem.