I recently received a review copy of the Horan book from Falcon and have given it a thorough reading, focusing especially on the areas that I am relatively familiar with in the Front Range. My overall impression is that there are two "books" here, one consisting of areas that many are familiar with such as RMNP, Horsetooth, Carter, Flagstaff, etc. and one that has many areas that only Bob Horan seems to have visited or knows well. It is clear that Bob is not up to date on current names and grades and has added fictitious problems everywhere. For example there are two new problems right of Little Chubby Demon at the 420s, where there are literally no holds. The RMNP section as has been noted is a farce where many well-known problems have all been tacked onto the 50/50 boulder for no apparent reason. Only the Kine Traverse, The Kine, and Whispers appear to be accurate, though V9 for the last problem seems a bit severe. But Evans and RMNP are not the only issue and high-end problems are not the only victims of misinformation. The magnificent V13 in Eldo, Suspension of Disbelief, is called Inversion and given V12 while Scarface in the Poudre is now V8 and called "Natural Tattoo". Both are very well known problems and errors regarding their names and grades are inexcusable. There are literally too many errors and omissions in this vein throughout the book to count.
The other "book" is about areas I have never heard of before and that look quite good. The only problem is that given the issues with the other "book", I can't quite trust that he is right with these areas either. I don't want to drive several hours only to be greeted with private property signs or totally misleading directions to mis-graded boulders.
My advice is certainly to avoid buying this book at the 50 dollar price tag. It is possible but unlikely that Falcon will invest in a radical revision and reissue of the book with thorough outside review and fact-checking. That would represent a large investment on the publisher's part that they likely could not recoup with additional book sales. Thus my fear is that local climbers and visitors alike are going to be left with a proverbial white elephant that is too expensive, too unwieldy, and not trustworthy enough to count on when it matters.