Try webbikeworld.com for a comprehensive guide and reviews of all helmets, Modulars included.
I have an HJC IS-Max BT, HJC Sy-Max II, HJC-Symax III Hi-Viz and a Shoei Neotech, in order of cost. They're all good, HJC being the loss-leader as far as pricing goes. They're not the quietest, but the best combination of quality and bang for the buck, IMHO. The Neotech is simply top-shelf in every way. Very pricy, but cheap compared to the Shuberth C-3 and C-3pro.
FWIW, the Star Wars Storm Trooper styling, the claustrophobic fit, and stratospheric pricing disuaded me from purchasing a Shuberth. If it fits you and your wallet, however, it'd be hard to beat the new Shuberth for quality and low wind noise.