I have the name of 2 different property managers that I know. Also, i can direct you to other resources that will be helpful. Can you call me so I can talk to directly and help best direct you to what would be the most helpful for you? Call 303-856-8980.
http://www.trulia.com (Rentals Section)
http://www.zillow.com (Rentals Section)
http://www.realtor.com (Rentals Section)
Between all of those, you will get a very clear picture if you can find what you are looking for. Good luck!