I have used elk outfitters twice that where NOT recommended by some one who had hunted with them. One turned out great, I found them after reading an article in a magazine. That was a long time ago in 1984 and I had the hunt of a life time near Gardner MT. We saw elk and mule deer every day and I shot a big 6x6 at eight yards...
The other hunt was with an outfitter a friend had met at a sportsman show. The hunt was also in MT in the mid 1990's. The hunt was a horse pack in, the country was beautiful. The outfitter had told us we would be the first group in that area, that turned out not to be true. We where the third group and the elk had been pretty much blown out of the area. Elk sign was every where but no elk. Still had a great time and the 27 mile horse ride was an adventure in it self.
I have gone on many other hunts with outfitters for other critters and my advice to you would be to go with an outfitter that has been recommended by some one you trust. I have used Bowhunter Safari Consultants several times and would recommend contacing them, they know what they are doing.
According to BSC elk hunts have the lowest percentage of success of any species they book. All the more reason to work hard on getting a good outfitter if that's the way you want to do your hunt.
Good luck to ya, Ken