We're looking for a replacement for an older slopeline vent-a-hood. It'll be wall mounted under small cabinets, and in order to get in 30-35" from the cooktop, looking for something at least 18" high (but could be up to 23" high). We'd like to spend around $1000 (or less) and would like stainless steel and at least 600 CFMs. We're considering the Proline PLFW 832.30 or PLJW109.30, or a Broan Elite. I suppose, we'd consider another vent-a-hood, but I'd rather spend a bit less if we can get something that's good. Thanks for any advice.