In the end the answer to your question is "how much cash do you have?"
For myself stalking is a hobby so I can't justify the huge money in Swaro/Zeiss etc. and I went with the Minox HGs for which I paid £400, I think they are a bit more than that now but suspect they could still be had for that sort of money with shopping around or second hand from a reliable source is also worthwhile. I've never felt that the Minox hold me back in any way and continue to view them as excellent glass even if you don't take into consideration that they are a quarter of the price of the top notch stuff. If I had the cash for a pair of top notch binos I'd keep the Minox and spend the money on stalking.
The magnification thing is always a debate and I'm happy with the 8.5 times magnification of the Minox in part because it is what I'm used to but also because it closely matches my scope. I would say the majority of people use something around 7 - 8 times magnification with 10 probably being less common and more difficult to hold steady but having some advantages as well.
The objective size is also another area where I suspect personal preference is a bigger factor than actual need. My feeling is that something around 8X42 will allow me, in a quality binocular, to see the deer before and after I personally feel it is wise to shoot them and, therefore, it does all I need it to do. Bigger objectives might let in more light and if you have a use for it you need to consider them but you also have to carry them around which is a downside so you'd need to be positive you have a need for the bigger objective.
If you're not aware of any special requirements then my money says you have no special requirement for anything other than the standard, and standard for a reason, approx 8X42 binos.