I haven't used that one, but we have the Easy Walk harness. You can get it at
www.sitstay.com for about $15. I am in the US and shipping was normal $7 or so.
We just got one a couple weeks ago and LOVE IT! You have to be careful though, they can slip out of it easily. We don't use it around the house, only for walks. Roxy loves to chew it if she has it on in the house.
Plus, the Easy Walk fits around the chest better. I had a hard time finding a harness that would fit around a chesty boxer.