Pros:
To date I have only played the "Finesse 18" layout so my comments are mainly targeted at that portion of the course.
The concrete tee pads are very nice. The on-site pro shop is fantastic; offering a huge selection of discs, as well as restrooms and refreshments. There are a couple nets set up by the practice area to be used like batting cages to warm-up your drives. Distances posted on tee signs are pretty accurate.
The Finesse 18 layout is heavily wooded and most of the holes are fair. They require precise, well controlled drives, but do not offer a lot of approaches to the basket. Big arms will be easily frustrated by the lack of opportunities to air-it-out on the Finesse 18. Most of the tee shots are straight drives with a few hyzers and anhyzers mixed in. This layout is all about not hitting any trees.
The Finesse 18 layout is almost completely shaded so in the hot Houston summer it's a welcome break from the sun.
Cons:
The "Power 9" holes are closed on the weekend due to priority given to ball golfers. It's a long walk from the clubhouse to the first F1 tee. It's a long walk from the last F18 basket back to the clubhouse. Golfers are not allowed to retrieve lost discs from ponds. The claim is that employees periodically search the ponds and return discs to the lost & found bin. Bring bug spray after it has rained. Grab a map from the pro shop. The transition from F13 to F14 isn't obvious.
Other Thoughts:
Spring Valley is a confusing course with regard to layouts. There are 28 total baskets on the course. They're typically played in one of three layouts, none of which use all 28 baskets. Holes are labeled with an "F", "P" and/or "T" in addition to the number to indicate which hole it is on a particular layout.
The longest layout is the "Total 27". This layout uses all nine of the "Power 9" holes, a connector hole: "T14", and 17 of the 18 "Finesse 18" holes. (Skips F6.)
Due to the "Power 9" being closed on the weekend, the most common layout is probably the "Finesse 18" which uses baskets F1-18, skipping T14 and P1-9.
The "Power 9" layout uses baskets P1-9, skipping T14 and F1-18.
While Spring Valley is a ball golf course as well, don't expect a Country Club atmosphere. It does offer more amenities than a typical park it, but a golf resort it is not.
Other reviews have mentioned lots of water hazards on the Finesse 18 layout. I've played this course only in the summer and the water is pretty minimal. There's a creek to cross on F1, creek to the left of F6 and right of F18, and a couple puddles back in the F14-F16 area. Other than F1 there wasn't much significant water.
On the Power 9 layout the ball golf greens play as OB; please stay off of them.