My refurbished Vitamix from 8 years ago blends fine to this day. I make kale smoothies and nothing has ever gotten stuck. Blades aren't removable though but it's not a feature I miss. I definitely preferred it when I was using lower powered blenders and needed to disassemble to clean. I'd have to pull the model number later but it's old so you probably won't find the exact one anyway. It's from the professional series which they still make. It's just got on/off switch, variable speed knob, and a max switch. Nothing fancy but performs great.