The OPTIMUM 9400 v.s. Ninja Mega Kitchen Series
THE OPTIMUM 9400 V.S. OSTER VERSA OPB9000 (from sunbeam)
The OPTIMUM 9200A (2nd gen) vs. Omega BL630S Blender Comparison Review
THE OPTIMUM 9400 vs. Vitamix Blender Review/Comparison
The OPTIMUM 9400 Vs Other High Speed Blenders