I've played about 500 rounds on Gil Hanse courses. About 450 of them are on one course - Rustic Canyon - while the other 50 are spread out among 8 of his 11 originals - Castle Stuart, Crail Craighead, Inniscrone, French Creek, Capstone, Applebrook, & Boston Golf Club, his restorations at Sleepy Hollow, Essex County CC, Fenway, Fishers Island, Ridgewood, Winged Foot, St. George's G&CC & Plainfield CC, and some of his renovation work at MPCC Shore & Soule Park.
I would recommend all of them but especially Rustic Canyon, Castle Stuart and Boston Golf Club which I think are his three best courses.
One thing I like about his courses is his confidence in keeping natural features incorporated into a hole or green that other architects might feel should either be softened or, alternatively, enhanced. Rustic Canyon is a great example of this.
Also a Hanse course is sure to give you at least a few holes that don't remind you of anything else.