The Solo is the same as the Antec P150 - different color and newer flexible bands to hold the hard drives if you choose - the trays with rubber grommets work just as well.
This is the best case I have ever used. For me anyway... Some complain about no removable mobo ray, but that is the point. A removable tray will add noise. This sucker essentially has dynamat on the side doors and is designed to be very quiet yet is still very cool.
Best case ever!