Is this the one that's £180 and fits over the back for 30 minute sessions? If so I use one regularly on my horse and it does seem to have made a difference. I can get an extended trot out of her after using it (which I'd struggle to do before I started using it), and she's easier to move up into canter, especially on her more stiff left rein.
We use them on several of the horses on our yard for varying reasons. We have had spectacular results. To begin with, the horses love them. They stand there and go to sleep while they are on. They also make such a difference to the horses way of going. When you start to work them its as though they have already done 20 mins or so, the pad has such a suppling effect. Don't know anything about the equisage except that they are a lot more expensive.
ive just bought one my friend tried hers on my boy and he loved it my friend has had such a difference in her mare doing dressage im getting mine for after a long days hunting he can have it on in his box while we all have a drinki (coffee)sausages and pies and cake in other lorry afterwards !!! I bought mine from rideaway it was the cheapest around as for the equisage they are about £2000 and are more for the profesonals. (sorry can't spell)