I demo'd Pro Landscape and it seemed real good. I didn't buy it because I got a different one free as a trade-show special from a company that I bought billing/scheduling software from. These programs really amaze customers and help sell a job.
The thing I like about Pro is that you can set up a digital image and a site plan. You need a site plan on a larger job for measurements and stuff but most customers just see lines on that. The picture usually blows em away and they start filling out the check.