My current helmet is the IRH XR9 (pink, 7 1/4), I like it because it fits large which I need because I have a big head and thick hair. I've had this helmet for five years now, and I've always followed the five year helmet rule. Plus I've taken a lot of falls with this helmet, and the chin strap is becoming very worn so I think it's best to replace it.
I've heard really really good things about Tipperary helmets, and I'm looking into:
Tipperary T2 Helmet | DRC6786 | Greenhawk
Tipperary Sportage II Helmet | DRC2063 | Greenhawk
I am also looking into the Troxel Liberty Helmet | DRC6940 | Greenhawk
I'd like some more opinions on these helmets from people who have owned/tried them. Protection is most important to me, but I'd like to know how they fit (of they're true to size), handle scratches, if they come with extra padding, etc... You get the gist!