Whats a good bit to start HUS with?

What's a good bit to start a Hunter Under Saddle horse?

Isnt D ring snaffle the most common?

Any snaffle will do.

I think a french link or a regular snaffle :)

Dee ring snaffles and Full cheek snaffles are the most popular style of snaffle for hunters. They come in a wide range of mouthpiece styles, a lot of horses prefer a french link style mouthpiece.

Any snaffle.
For HUS, the current trend is dee rings, or full cheeks. But mostly dee rings.

My gelding goes in a french link dee, by JP for reference.

Id say jsut a simple dee ring snaffle=]

I personally love the look of my full cheek, and it helps push Cowboy around them turns :p Loose ring snaffles are ugly, and slide through pony's mouth. I use a dee on Diamond (slow twist, for gentle hands!!!) And a full cheek on Cowboy (he's easy :p)

Half cheek snaffle with roller. Steer away from just a regular jointed. They can actually be painful to some horses.

To start with go with what your horse goes in already, you can read the rule book for restrictions. But I've noticed that someone high levels (3ft +) Pelhams are the biggest fad. Shows how fany you are and how you can ride with 2 reins - could you tell the sarcasm? Don't do this unless you can actually ride with 2 reins