I've got the Motion Pro kit (a bit flimsy) which I bring to the track with me but in the shop I use a few different heavier duty chain tools.
I really like this tool and I've got one of the older versions with a built in handle instead of the bolt head/wrench setup which I really like.
http://www.smithtoolinfo.com/a8050.htm
I use a special set of Vise-Grips with a side plate ...



