Thanks to all. I'm just not convinced that the increased flow from a K&N is worth it for a street, non-race vehicle. "Race" vehicles see different usage than street vehicles. Race vehicles have engines that tend to get 'torn down' a lot more regularly than I want my engine worked on! As such, it seems that high flow is critical for the racers, who will be inspecting the insides of the engines regularly, and R&r'ing anything that needs replacing. For a street car, maybe it's more essential to have 'necessary and sufficient' flow AND super-efficient filtering ability. Since I'm going to be switching over to the GC at my next interval (from M1 0w-40), I wanted to get a filter that will stand up to my intended service/oil change interval. Ideally, we could expect excellent flow and excellent filtering, but in reality it looks as if we can only reasonably expect one or the other--unless we spend the big bucks! Fortunately, I won't be changing the oil for awhile, so the ...search for the perfect oil filter for my application continues!!!