Blendtec Designer 650 Blender (Open Box)

My Blendtec Designer 650 with WildSide+ jar is impressive, but how does it compare to my Vitamix E310 for making frozen fruit smoothies? Both of these high end blenders were purchased from Amazon & both were the same price as new. Aside from the Vitamix E310 container size being smaller, these two blenders are very comparable. I use them with the same amount of ingredients, and without a tamper. Blendtec Designer 650: -Smaller blender with an electronic control pad -WildSide+ is a better container in every way -Preprogrammed cycles are not terribly accurate -Electronic touch slider for manual speeds works fine -Smoothies have icier texture & some seeds leftover -30% faster than the Vitamix to make a smoothie -I have not experienced cavitation -Can hop & jerk while blending -Less user involved -Container pours clean with little to no dribble -8 year warranty, 2 HP / 3 HP peak motor *** After only a couple days of use, my new Blendtec constantly trips the electrical circuit after first starting to blend. This has me concerned there is an electrical short or some defect with this Blendtec blender. I will be returning my new Blendtec blender due to safety concerns. Vitamix E310: -Bigger, more commercial analog machine with a larger drive socket -Variable speed dial is simple & works better -More secure container attachment & more stable while blending -Cavitation(air pockets) is the biggest issue with the Vitamix -More user involved -Container pours messy with dribble -Smoothies are buttery smooth with no texture or seeds remaining -Yields a far better smoothie if you can be more involved -5 year warranty, 2 HP motor