Played Red Mountain Ranch today, and my initial impression is that it's an excellent course. It is by far rated the most difficult out of any I've played, at 148 from the tips, and 136 from the blue tees. Even the white tees are 124 or so.
I suspect the reason the slope is so high is that there is a premium on accuracy. You don't need to hit it far, as there are four or so 320 yard par 4s, but you don't always have a lot of room to work with.
For a semi-private course, I was quite unimpressed with the level of service rendered. There was no beverage cart (not like I use those anyways), and there was no guy ready to swoop in and clean my clubs after the round. The price was fair though, at just $35 for a 10AM tee time.
The condition was good for this time of year. There were few dead areas, and the greens rolled true (though not as fast as nearby Longbow or Las Sendas), but it wasn't as lush as either of those neighboring courses.