DF-Good observations,without the initial chirp nobody knows it's even there,scanning with multiple coils is something I need to do much more....Tony,I've found the same,I love my EX2 to death because it's taught me ALOT in general. I can't remember whose setup it is but it's a popular one and they use Fast On. If there was a really clean area with virtually nothing but deep coins,it might be beneficial to run only Deep On but I haven't really found one of those places,at least lately! I have started using Fast On with the CTX and it just moves from one target to the next quite well,this is VERY noticeable with no disc. I'd like to borrow a Coiltek just to see how it performs,you never know till you've tried it!