Well, not sure on any of those, though the Bellistic has been around for ages and has a good rep. I have a Tracer and it is top quality. Not too heavy either; I did an hour and a half DH race in it (the MegaAvalanche) and although it was hot, it wasn't too bad.
Check out Chain Reaction - The Animal "Claw" helmet is a Fox Tracer - read reviews - very good and only £45 inc Delivery at present - cool colours and nice Animal Logo too.