I had recently bought a new house, moving up from an apartment, and needed someone to wrangle the lawn that had not seen a mower in forever it seemed. As an apartment dweller, I did not have the tools for this undertaking myself, so I figured I would just pay someone who did...
After about a dozen phone calls to a half dozen lawn service companies, with absolutely no response (even though they all left junk on my door) - I eventually found 360 here on Thumbtack and things have been perfect ever since.
360 not only got the jungle of a yard under control, but have done all of the weeding in the rock and around the fences, trimmed everything up, and gotten the yard nice and green.
And they get all of the weekly yard maintenance done and over with in about thirty minutes. No fuss, and they do a great job.
A few weeks ago I discovered that I had a sprinkler issue by way of a giant water bill, and once again 360 came to the rescue... Their sprinkler technician was out, diagnosed the issue, and had everything re-wired and re-plumbed in about an hour.
360 is slightly more expensive than the average "truck full of lawn guys", but you do get top-notch service, knowledgeable people, and they offer so much more than just cutting the grass. And given this, they are worth the slight up-charge in my opinion.
If you are in the Denver area and need lawn care or landscaping, give JJ a call. They apparently do house painting as well.