I picked up some synthetic motor oil today and I spent quite a bit of time looking at filters. For the first time I see a synthetic oil filter, priced twice that of the "midrange" one I ended up buying. I did not buy the synthetic oil filter for several reasons but I am wondering what peoples opinion on it is. Is it just a gimick, or should it be used with synthetic oil. Last time i used synthetic there was no such filter so I read and read but am not comvinced of the necesity.