I have been looking at walk-behinds for a while and thought I had narrowed it down to Toro and Exmark. Now I hear about the Quick 36" Samurai Dually WB. They appear very reasonably priced on their website and are offering free shipping and 50% off accesories. Can someone tell me if these machines are comparable to Toro, Gravely, Exmark, etc. or are these in a different class?