Horrible Customer Service
This is an update to a previous recommendation. Dave's creations are awesome but after you write the final check things go down hill fast. Don't bother with a Maintenance Agreement. You can pay but they don't show up. If you call for them to service landscape lighting, replace dead or dying plants, you may as well be calling your dead grandmother or just talk to the wall.
Save yourself aggravation, hire someone else for your landscape projects.