I have a VOX that I really like when it cools off a little. I'll wear a 3/4 until it stays out of the 80s - get light headed when I overheat. The VOX has the flip-down sunvisor. It is only ~$99 including shipping
great quality for the price, great features, solid construction with design innovations, replacement shields available from Sterlingtek at reasonable price, removable washable liner. Fairly good color and size (from XSM to XXL) choice - including a pink version for the ladies. Good vision to the sides, not too heavy. About the same noise level or a little better than most full face lids. I don't know why, but 3/4 is much quieter for me.
glue smell takes a while to dissipate, other parts (besides replacement shields) not available yet, Sterlingtek is the only US distributor. No storefront to try them on at (are there any to try on Cabergs?).
I wear a Medium in HJC 3/4 helmets and most others. I bought the Medium VOX and the top fits me great (better than my old Bell), but the cheek pads are a bit snug (not unbearable, but a bit noticeable). I hope that they will break in because replacements are not yet available. I had the same problem with a Lazer Century (now sold as AGV GTO) and was able to buy a set of Large cheek pads from AGV that snapped in and solved my problem on that lid. If someone else starts importing the VOX and includes parts for it, that would make it one of the best deals that you could imagine.
It is DOT and not SNELL rated (I know of no SNELL rated flips). Has added features like a snap on the strap to keep it from flapping (I found the strap way too long and cut it shorter, thus removing the snap). The vents move more air than I expected. Not a lot of air, but still I could notice the difference even on the GL1800 (stock windscreen in bottom position).
I bought it last month and only have about 300 miles on it so far since it is still rather warm here in Tennessee. Probably start wearing it full-time next month. I love the flip-down sunvisor when going into the sun. It should make the fall days with low sun angles much nicer for the commute.