Training Muay Thai here for 6 months now and love it. Friendly atmosphere, good equipment, experienced instructors and trainers in Muay Thai, MMA and BJJ. They recently (Jan 2019) added a bunch of new equipment for strength and conditioning training as well. I think most people there are training for fitness/fun but certainly XFC could lead you to higher levels of martial arts as they take proper technique seriously and "train like fighters" as they say.