Are you wanting a MTB helmet in particular or cost or safety rating?
I'm getting ready to retire my Bell Super 2 and ordered a Troy Lee Designs A1 Classic MIPS Bike Helmet but won't be home to get it until 13th. TD A1 rated high on comfort and VT rating but both of these rated sucky on ventilation. Either can sometimes find a good deal online. But maybe somebody here knows a better helmet and price on another helmet.