Pretty much the same here. I prefer 8x over 10x for the type of hunting I do here in Pennsylvania. Out west I would probably opt for 10x due to the longer ranges. 42 mm is probably the most common objective size though there are some 32-36 mm models on the market now which you might consider.

I prefer Nikon as well as I believe they give you the most bang for your buck. The Nikon Monarch 8x36s that just debuted are excellent ergonomically and optically. Priced between $200 and $250 which fits most folks' budgets.