They run some of the very best camps around. The likelihood of it advancing your cause as a recruit is not very great, but to the extent you're looking for a camp experience, it's very good.
And if you do have the ability to stand out, it couldn't hurt you recruiting wise.
If they are already recruiting you, it's a great way to let them see you work out and also have a chance to talk to them in person at length, within NCAA rules.