As a Lander resident and grad of a WFR at WCC I would recommend taking one here. Lander has a compliment of some of the best Wilderness Medicine Institute Instructors living in town (because NOLS is headquartered here) so you would likely be taught by one of the longer term instructors. Learning at WCC is kinda fun too, because your class will be populated by many of the students from that college. They are a goofy bunch (they randomly sing a lot), but significantly more focused than your average college student or outdoor professional. The outdoor area for scenarios has both nicely manicured lawns and some hilly scrub brush areas, and is quiet and away from major roads.
As for the Lander area itself, you have access to the Wind River Range, great Rock Climbing in Sinks Canyon and Wild Iris, and good food and community. Your night scenarios take place up in Sinks Canyon near the Popo Agie river, which you may even use for cold water immersion training. All in all I would definitely choose Lander, but I am of course buyist.