Just wondering if anyone is using a Spey rod for saltwater fishing, i Occasional use my 6 wt switch at Mokau river mouth, mostly to defeat the wind, But normally i fish all salt water with a 9wt XI sage.  

Ah a subject I'm pretty familiar with. An old mate of mine Max Garth used to use them a lot in the salt. He used them on beaches to get out wide, as well as rod length assists keeping above the breaking waves.

I can't say Iv used double handed rods in the salt much personally, but I used them in the fresh a lot. Quite a lot of people using them in the fresh in NZ these days.

Some really nice rods out there, it all comes down to budget. I'v got some lovely rods, but it's easy to blow $2k on a double handed rod, but that's not to say you can't get some bargains.

My current favorites are the Epic DH13 rods (i'v got a 6# and an 8# version). One of the great things about these rods is that they are 13' 6 piece, so that they are the same length disassembled as a normal 9' 4 piece. Very handy for portability. My other 13' rods are 4 piece (as is common) which are a bit of a pain to travel with.

https://swiftflyfishing.com/collections/custom_fly_rods/products/two-handed-spey

Maybe have a look at the Redington double handed rods then? Outstanding value for money.

I just picked up one of their Dually rods as a backup switch rod. $250 delivered in NZ   A deal I just couldn't pass up.