Bought the Levoit LVH133 for my allergies and to filter out smoke during wildfire season. It filters quickly and is relatively quiet. Time stamps for the filter and noise test below:
0:00 Intro
0:33 Filter
1:03 Air purification test
2:52 Noise test
4:08 Features
4:46 Cost to run
5:14 Final thoughts
Amazon link to LVH133: https://amzn.to/2IGgVrG