Ed,
IMO Eagle Point is the best of the three. Has good design and terrain, some strategic/heroic shots possible on par 5s. #10 is a questionable hole to some and one long cart path traverse after #15 to get from bottomland section to hilltop.
Stoneridge I played once, more than 15 years ago when it was (too?) new. Maintenance and related cash flow issues at that time. Hilliest of the three.
Centennial I played from one tee too far back on the way back from the Last King's Putter. Still managed to play the 3s and 5s even, bogey golf on the 4s. Large greens but didn't see many dangerous hole locations or high percentage chances for 3 putts. Good use of contour, some fall away greens.
The entire thread about Centennial I started last June:
I had the chance to play this course during the drive back from KPV.
http://www.centennialgolfclub.com/view.asp?id=335&page=8480. It is located a few miles south of Medford OR, using the Phoenix exit.
The card shows 7309 with 75.0/130, 6900 72.8/124, 6401
70.3/123, lowish slope rating considering the length, and while a medium length hitter I still opted to play at 6900 yards, and I didn't feel overwhelmed.
Gently sloping terrain for the most part, with most holes in a 80-100 yard wide corridor between waist - high native grasses. The grass doesn't seem to be a factor off the tees (in light wind) but does intrude to peskiness near the greens.
Locating and playing the ball wasn't as bad as imagined. The parallel holes are separated by the grass and OB doesn't come into play. A really open site, wind will be a factor. The clubhouse (unbuilt) area is at mid elevation.
Greens are T1 bent, fairly large, and gentle contours and could get exciting at 11+. No split levels, and two on the back are cambered front to back (15,17). Moderately bunkered, and they are shallow with the white sand he normally uses. No runoffs to tight putting areas. No shots over water, but I did see some shots find the three lakes near greens.
I didn't see any great risk-reward situation. Two par 5s are reachable in two. #3 is a stout uphill dogleg (452/429) to a hilltop green, followed by a drop shot 3 to a green much like #5 at Ghost Creek, most will test long irons. The next two par 3s (6,14) off similar length shots, but box the compass.
The longish par 4s (3/452, 7/474, 8/452, 12/453, 15/458 and 18/494) provide the meat of the course, while the two short 4s suprisingly lack challenge.
Given one day in Medford, Eagle Point still has the edge, but that is a no longer hidden gem.
Other interesting southern Oregon courses might include Myrtle Creek about 80 miles north on I-5, Running Y in Klamath Falls and Salmon Run on the coastin Brookings. The Nicklaus group is building the Paradise Ranch 7400 yd course near Merlin, but it isn't scheduled to open until summer of 2008. The only worthwhile private course is Rogue Valley, on a Egan chassis, with a newer nine hole loop (4-12 of the main course).