Looks very tempting doesnt it. I'm sure theres no need for external antenne with it.
With regards to showing speed etc, if you have another piece of elec. thats nearby just export that data and keep it up there when travelling.( may be a good use for and old sounder)
I use my furuno in nav mode to do this. I actually prefer to use the ray sounder anyway.
Brendan
Cheers guys, I actually ended up getting a hds10 which I am extremely happy with so far!!! Thanks again!