We have downdraft now but want to install an induction cooktop which we already have and have used and loved using.

The "going-up" install is going to get a little complicated due to not having a direct path to the outside. Although the linear distance to the outside of the house is only 6 feet, we will have to take 3 or 4 90-degree turns to get there (various obstacles in ceiling).

Am eyeing one of those bargain hoods on ebay. Now I suppose there will be those comments of "you get what you pay for"; "those are junk"; "get a GE", etc... but frankly, over $2K for a motor and some sheetmetal is highway robbery and gets me started on another subject I'd really not rather get into.

So: has anyone purchased and installed/used these ebay hoods? They run around $500-600 and while some are shipped from China I am looking at one seller who ships from within the US. They are 'rated' at 700cfm but I think the actual performance is closer to 400 cfm.

Given about 8 ft of run (6 ft plus turns) and the turns themselves, will 400 cfm be good enough for the average cook? We cook perhaps 3-4 times a week, more if you count weekend breakfast/brunch. Type of cooking is from all over the globe, so there are some odor challenges.