Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Oster Improved

I had some bad memories of some poor engines on previous Oster blenders but this one really rocks (it could probably crush them too). Just make sure you have it turned off before plugging it in. I didn't think I would like the on/off option instead of the supposed variable speeds of other blenders but I really love this blender. It is easy to pulse when you want to slow down the blending.