Seems like everyone has offered great advice.I have used all the machines mentioned in all of the replies.Plus a few more, I'm currently using a BHID 300. Yes it's not a very popular machine at my beach's.Usually all you see are the excals ,GTs and a few others.I wanted to try something different for the dry sand and wet slopes.The BHID is by far the most fun machine I've used.By this I mean I have to work it.It's not super deep in Disc mode, but in AM it will compete and beat alot of other machines, if you learn what it's telling you.Also the tell-tell lights work in AM mode.Red never dig, Yellow always dig"most gold turns on the yellow LED" and green is usually coins, but if the target is really deep, the green can change into a red LED as you get closer.Also you'll get a jump in the threshold but no LED, then you know it's a deep target, I'll usually just start kicking away 4"-6" of sand then I'll get a LED to turn on.I find it exciting when the yellow turns on when going after a deep target." I'm easy that way". It's even more fun when I'm hunting at night, the LED's really light up nicely.I'll be walking along the shore line, seeing red,,,red,,,red,,YELLOW,DIG!! " I said I'm easy to please". It hits my 1gram test ring at 8" np in AM, but wont turn on the LED til 7" It will also hit my 13gram ring at 12"-13" but again it wont turn on the LED til around 9". Yes other machines will also hit those numbers with no problems I know. For some reason I always have fun with this BHID, it really cracks me up with those LEDs
You do have to manually GB it, but that's a piece of cake.It is water proof, it seems to get around 20plus hrs on 8AA's , it also has a12" coil for good coverage.I do find that I have to turn the sens down to the preset when on the wet slope.But I can max out the sens in the dry.It does operate on 2 freq. 3kHZ and 15kHZ. I find it to be VERY balanced, all the weight is under your ,or close to your elbow.I can swing it all day.
Just my opinion on another beach machine.
Good Luck and HH!
Ken