If you allow you grass to become too high and are trying to cut and mulch more than a third at a time even a good mulching mower is going to clump. That said, the Toro SR4 and the Honda HRX are both excellent mulching mowers. I did notice when I was at a dealer yesterday that, at least, some of the new Toro's have a 'Toro' engine now, which is made in China. I would seek out one with a Briggs on it, or, if it was me, purchase the Honda.
Scag Tiger Cat 48-inch deck, Kawasaki motor
Lawnboy 10227 2T push mower
Stihl BG86 handheld blower
Stihl BR550 backpack blower
Stihl KM110R kombi system with lots of attachments
Stihl HS45 hedge trimmer 24-inch blades
Echo SRM210 trimmer