I have used the Excal for 6 yrs on east and west coast Florida surf and CTX 3030 past 14 months on east coast. Like Beerguy, I use the CTX 3030 almost exclusively with the 17"coil and most time in surf w/o harness. I swing the CTX 3030 with 17" coil for up to 8 hrs in surf or beach and change hands/arms every hr or two. I, too, first had reservations of using it in water but have overcome that hesitation (although I put Tampons in battery compartment to absorb any water entry, that hasn't happen so far).and love the machine in the surf. Unlike the Excal, I almost never dig bottle caps anymore with the CTX; whereas in the past w the Excal I'd dig 30-50% targets as bottle caps in the surf. The target ID on CTX for coins runs around 80-90% and when time is limited (e.g., low tide, or limited time) I feel confident in passing-up zinc cents at 12:37 and copper cents at 12:40, with the realization that there is a small possibility of passing on good targets like the silver and jade ring I just found at 12:40. Pull tabs at 12:15-16 also run around 80-90% accuracy and I'll also pass on them when time is limited and I'm concentrating on gold. Results speak louder than words:
2018 Finds to date (April 8th, 2018):
Gold Rings - 10
Gold teeth (6) caps - 1
Silver, inc rings - 22
Coins: +2100
Knives: 2
Sunglasses: Too many to mention