Getting about time to replace my 5+ year old NeoTec. I've been thinking about the new Schuberths - the E1 or C4. Has anyone gotten one of these? What do you think of them? Also wondering about the comm systems that can bought for these helmets. I'm told the E1 is a re-worked C3 Pro, but the C4 is a new design. Thanks in advance for any thoughts.