I've not used the ratcheting type, although I could see some benefit to them in a tight space-that is, if you can get the head of them into said space! I've found the traditional Klein Pliers, the tool the company is most famous for and they're actually crimper/cutters, to be the most effective. You can see a photo here:http://www.tools-plus.com/klein-1006.html
If you're using the conventional strippers/crimpers you're going to have a quantifiable increase in life satisfaction by purchasing a pair. Available at Home Depot and electrical supply houses. Channel Lock makes a knock-off version as well.