When I walked into Proficiency I was 80+ pounds overweight, was afraid of gyms, and had never enjoyed a workout in my life. The owner, Risky (turns out that's his real name!), welcomed me and made me feel comfortable. Then the trainer, Herve, taught me everything I needed to know to get my act together -- in a relaxed, peaceful, no-pressure atmosphere. The gym is exceptionally clean, quiet and mellow. Parking is free. This is such a small gym there aren't even any membership cards -- they just know you.
Pros: Cleanliness, atmosphere, easy parking, friendly & knowledgeable staff, simple membership plan with no predatory sales tactics