Bought this in July and Installed in new construction  about a month ago.   

I didn’t do much research for this item.  I think you need to look at the cfm of these fans but this one is average and will not disappoint.  

It has 4 speeds
A timer
Lights in back 
Removable grills that are insanely easy to wash and replace!  

This hood is verycost effective too! 
The stainless is easy to clean but make sure you get up top and get all the dust off of it often.  The build up get sticky when you are frying or using the cast iron.