I am a big fan of LAS helmets, if you find a MET suits your head shape then a LAS should do too, the trouble is that most bricks'n'mortar shops don't stock them, so ordering is a risk.
The one I use at the moment is an Istrion, a couple of years old (bought it to replace a helmet damaged in a car crash (it was in the boot and got hit by the bike that was also in the boot).
The downside, as others have said, is that lack of weight costs, the Istrion (which is not the lightest in their range, but not the heaviest either) is, or was £92 from the LBS.