I do NOT have any of the Spartan items, but know the owner and what he has done to improve the suits over the years. The current version has so many little improvement over the first itteration, it's not funny.
If I needed a new set of leathers, he'd get my business.
His gloves have been reviewed very favorably on Webbikeworld.com and his suits have been used by a few WERA/CCS racers. There is even some pics around the web of his suit that's been crashed a few times. It faired much better than some of the other suits out there.