"Lurked" - strange, really? People who look at forums and don't post (mostly through the fear of being set upon because they might have a point of view) are called lurkers and they practice lurking. Is there anything else that I've written you'd like to pick holes in? Good lord this is lame.
I would be looking at a TB or Trak with good action and able to compliment your mare. Most horses given the correct training can attain Nov level in dressage so you are not too limited in your choice.