Here's a Rundown on a Few Places You Can go For Landscape Equipment
You have to have the right tool for the job, and having the proper landscaping equipment is no exception to this rule.
For your smaller items I recommend Gardeners Supply Company. I've dealt with many others, but Gardeners Supple Company is by far the best.
You can search their entire inventory using this Search Feature:
For larger landscape equipment such as chippers, backhoes, ect... your always better off renting unless you own your own landscape business and have determined that the cost of owning this equipment is less than renting.