Denver is indeed stacked in terms of training, which is expected. Trained with Ludwig and Toner in Boulder at Easton BJJ myself. Good stuff!
I assume since the OP has the name "ColoSpgs" that they're looking for training within the 719 area code and that the hour commute to Denver is too unreasonable for training. Within Colorado Springs, there's Rough House MMA and Fitness, Colorado Springs Fight Factory, Champions MMA, Victory MMA, and Pikes Peak Combat Sports. Best bit of advise is to do some leg work and check out the gyms yourself, most schools offer free trials. Personally I like Rough House but again, it's best to try out the different gyms yourself if you can.