i use amana bit's I have the flush trim It works very well and they are very good I thank they are rated with whiteside as far ar sharpness Dont cost as much as whiteside Their is a cabnet supply house that carry's them So i dont have to order Check in your area Their may be a supply place near you del
here is a link to the flush trim amana bits
http://www.amanatool.com/bits-fv/47090.html