Bob... this is a post from the old forum I made:
--:It is an awesome coil, indeed... but it does take a bit of getting used to... considering how the machine is pre-programmed with it's "default" coil (the 9.5). Specifically the depth read-out, which is, to me, the most important thing we need to know. My little bit of experience with it says that a shallow target is deep.
I have it, but I haven't used it much myself. I guess I'm simply holdin' my breath for better programs that run with it... or better places to use it to it's fullest ability.
(Jus' my opinion, for sure. ):--
... and it is noticably heavier than the stock coil which made me take more frequent swinging breaks.
Hope this helps.
Krom