I have a Dingo, purchased 4 years ago. Its a great machine and I would buy again. My machine has had a few problems, motor went out, had to replace a cylinder. Mine is a 222 ride on. Biggest complaint is Toro came in and set up shop, sold about 100 of these and then set up service center in a town 90 miles away. Not really helpful when you need a small part to get back up and running or rent an attchmnt for a day. I use the ditch witch trencher attchmnt on mine. The one I bought with the Dingo was worn out in 2.5 years. The Ditch Witch attchmnt is built a lot better. (Dingo invented the mini and does it best, Ditch Witch is the worlds leader in trenchers, Hence I married the two.)
I personally dont like the controls on the Sk 650. When going over rough terrain they seem unsure.
The vermeer seems to be a beast. Very narrow base to get in tight spots and can lift more than most.
I would call the dealer and tell them you want to demo them for a day and that will help you decide. Make sure you lift something close to the specd weight because there seems to be some exaggerating going on with some dealers. If there is not a local, established, stable service center, NO SALE. Don't buy one that doesn't have a platform to stand on, when walking behind it you have to worry about where your walking and your load, makes it unsafe for operator and the load.
Check out the link below for more info.
http://www.igin.com/Landscaping/lans...teerChart.html