I like the Topeak Road Morph G. I mount mine on the top tube tho. CO2 is smaller but you only get 1 chance. Also I've been able to help other cyclists I've seen stranded on the side of the road so it feels good.
>>1907202on my commuter bike I switched to schwalbe marathon plus and I stopped getting flats completely. They're heavy though. I'm not sure what the racing bike tire equivalent is yet.