Nice bear there.. both are nice. I really like the brown one. They make a really nice mount. Even if it were not the biggest I think I would take that one.
As for walking up on them, it will make the hair stand right up on your ... head. I was guiding for a fellow one year, running a bait line. Every day I baited the same five bait stations. The fourth station I began to notice that as I walked in, a large bear was standing in the brush waiting for me to dump. He must have heard the four wheeler coming through the woods and to him that was the dinner bell. From where I parked, I still had about a 1/2 mile hike through the woods. I got so concerned, I started hauling a .357 magnum with me after that.
I had a monster boar coming in to the first station and told the guy about it. I even set ribbons for him so he could judge size. He ended up shooting the first bear that walked in instead of waiting for the big one. His was still 285 gutted, but I am sure the one he passed on would have been well over 500 pounds.
Dog hunters ended up moving that bear and it finally got tired of running and turned. I heard that two dogs got taken out by that big fellow. And they never did get it stopped long enough to shoot.