I bought a pair of Swaro 10x42 EL, took them back for the 8.5x42 EL.
The 10x resolution wasn't as good as the 8.5x, making your eyes want to focus constantly and in about 1/2-hour of glassing I'd have eye fatigue, also aggrevated by jitter trying to hold the 10x steady.
For hours and hours of glassing the 8.5x42 EL are great, plus they are brighter in low light than the 10x42. If you need to be assessing points for P&Y, you'll need a lot more than 10x anyway... like a spotting scope on a tripod.
Truthfully, 95% of all elk I spot is by the Mod1-MK0 eyeball, followed up with the binos to get a closer look for body/antler size, etc.