What size and what advantage do you believe you might get over the standard coil.... which is a very good set up? I think those coils looked great, but they may have came out at a bad time .....many heard about the Nox and held off...then purchased the Nox. The machine kind of put a hurt on all sales to include coils.
The nel coil is about 140 euro, I hadent considered the Sov coils , thanks for that I will have to look into that,
pity they done make the unit with connectors for swapping coils and headphones
They're all fun
Any BBS coil will work. I have put on the Nel 15 before for someone but something that big will be tough to swing in the water. If you mod your excal, then you can put any coil you want on it. Sometimes I use a larger one than my stock coil but the stock Tornado coils are the most stable in my opinion next to the Detechs as well.
What kind of connector are you using and its it watertight to 20meters ,
Thats about 60 feet