Dressage saddles are often more inclined to position a rider in the saddle more firmly than a showing saddle. A working hunter saddle is a little more forward cut than a normal showing saddle, but is fine if you want something that can be used for jumping as well as flat showing.
This is a standard straight cut showing saddle
Dressage saddle (much deeper seat)
working hunter saddle wtih a little more knee roll
I suppose it depends what level you want to compete at. I think as long as the overall picture is a good one, the saddle shouldn't make too much differnce.
If the class is a class where there is a ride judge, then (apparently) some judges find them uncomfortable to ride in. However, if there is no ride judge, I suppose your options are more open.
It is totally up to you - any of the above saddles would be fine. I was simply showing you the difference as it is easier to see if they are put side by side - I note you have Welsh D in your name which may indicate you are showing natives? If so, the judge doesn't ride, so the comfort factor is not so important.
However, showing is about how things look, and therefore a showing saddle is obviously the most logical choice if money is no object!!!
I have two other saddles which I am going to sell to fund a working hunter saddle. I would like to show at county level only if I can conquer all my nerves.
if you would like to see some pics of my horse you can view her on, she is a Section D
www.northfieldwoldphotography.co.uk under the sport section and Frys 5th Jan 2008. This was her first ever dressage test. I was not the rider however it is my intention to do dressage with her.