Just returned from Casa de Campo. We stuck to the original plan and played twice at Teeth of the Dog and once at Dye Fore and had a fantastic time.
Teeth of the Dog lived up to its reputation and I think is well-placed in the second 50 of the Golf's Top 100 World, though for me it would probably be closer to 100 than its current 59. The oceanfront holes are obviously the highlights and are as good as they are spectacular. We played in a 2-club wind the first day and holes 15-17 were all anyone could ask for into the wind. The set of par 3s is world-class, including the inland 13th with a very difficult green to hold. Highlights for me include the short par-5 3rd with a small elevated green, the dogleg 4th approaching the sea, 6, 8, 15 and 17 along the water, and the overall width of the course which was a pleasant surprise. Conditioning was solid but the green speeds were disappointing (6 or 7; maybe they were keeping them healthy for the coming high season?), and many of the inland holes were mundane and wouldn't be out of place at many average Florida courses, though the strategic values were high given the angles into many of the greens. Also, the rocky hazard on the left side of 2 was unattractive and I thought bizarre, leading to random outcomes - over 8 tee shots for our group (4 players 2 days) 3 found the hazard, and my smother-hook on day 2 ended up in fine spot between two rocks whereas my two sons had near misses that were completely unplayable.
Dye Fore was completely different but we loved it. The scale of the place is huge, the massive heaving fairways presented many options and interesting lies, and the greens complexes were really good. The views of the marina and the Chavon River were fantastic. We played in a 3-club wind which had a big impact, but the fairways are wide enough for the conditions so the course is challenging without ever being penal. Highlights include the well-bunkered par-3 3rd playing 30 yards longer into the wind than the 170 on the card, the long 4th and 5th playing down toward the marina in the distance, the (almost-) driveable (downwind) par-4 7th, and the back nine tee shots on holes such as 10 and 18 that appear intimidating from the tee but actually have large landing areas.
2 + 1 was the right mix but if we played a 4th round it may have been back at Dye Fore - we liked it that much. For a longer trip we'd definitely try the Country Club, and the renovated Links actually showed some promise as we were driving to dinner each night. Overall the resort is spectacular and exceeded my expectations. We will definitely be back, and may actually visit as a 'boys golf trip' in shoulder season when we can make it back to Punta Cana to play the great courses in that area.