I've been riding with a HJC CL-15 helmet for the past year and I love it to death (I hope I don't die in it!). It's really solid, comfortable and does not compress my glasses.
You should always wear a full face helmet. If I were to crash, I'd rather have to deal with the slight discomfort of a full face (which is not a problem) verses the horrible pain and discomfort of having my jaw wired shut.