I was going to get the Nel Snake when I traded my high tone Vaq to a dealer that wanted one.
He got my Vaq and a few extra coils and I got a new Mojave and one more pick so I went for the Snake for my F70 which is basically your Shrew coil.
Nel and Cors owners are relatives and they make the same products under different names.
I had good luck with the tiny Fisher DD but I just wanted something just a bit bigger to "feel" like I was hunting with a bigger coil.
The Snake/Shrew isn't all that much bigger but I felt/hoped it would seem like I was covering more ground than the tiny, hockey puck Fisher coil.
Turns out he didn't have the Snake in stock, said he would order it for me if I really wanted it but he did have a Sharpshooter handy as it was a more popular size.
I said fine, send me that one instead.
I didn't feel I really needed it all that much but I heard the coils from these two companies were a lot quieter and even though I always thought factory coils on factory products they make would always be the best match I got that one just to experiment.
Serendipity...when I got it and mounted it on my F70, (no DST and I do like to turn it up), I was pretty shocked at the performance.
Finds the tiniest targets, separation is superb, the depth dropped my jaw and the stability and how quiet it was shocked me most of all.
Plus, I do feel like I am hunting with a decent sized upgrade over the small, round Fisher sniper.
When I decided to invest in a larger coil than the 11" DD I already had for the F70 you better believe I went for one of the Nel or Cors versions...I read Mars and other manufacturers had some decent coils but results were sometimes hit or miss.
Gotta go with what I know works...so I did.
Just the same as the Nel and hit all the same performance marks but bigger, quiet, stable and not all that heavy so I was happy.
Your Shrew should be fine as a prime sniper, might not be any real advantage to get a slightly larger Sharpshooter but if I were you try the stock DD and if it seems a bit noisy or not as deep as you feel it should be then think about one of the full size foreign jobbies...I would guess you will also notice the difference as I did using mine.
