thanks everyone for the good advice.
just to clarify, I am not recording the entire band all at once, just tracking the sax individually. Also the tone I am looking for is more natural, warm and smooth rather than the edgy, aggressive rock sound. the saxes are mainly alto and sop which are already pretty bright by nature of the instruments themselves, not warm and lush like the tenor.
I have a couple of 57s but never realised that they would be suitable for this application. Will certainly try them out with your tips on placement as well.
I have actually tried an AKG C419 which is a hypercardioid mini clip-on condensor supposedly designed specifically for the sax. I found it overly bright and thin though but it could be my placement and EQ. unfortunately I did not have much chance to experiment with it in that instance. the advantage of a clip-on though was that the mic distance was more consistent because the player tends to move around alittle which might throw off the fixed mic positions. wonder if any of you had any experience with the clip-on - are they more suitable for live use rather than recording?