Ecco, Red Wing, Chippewa or Wolverine would be my choices. Just make sure you get waterproof not water resistant as there is a huge difference. If you go the real leather route Obenaufs makes a great treatment that will help keep the boots in shape.
Be aware that all these brand fit quite differently and when buying them it helps to try them on in a store. 200.00 should be plenty to get a nice pair of boots.
Can you get RM Williams where you are for $200? Great craftsmanship, and you can get them resoled when needed, so they are a long term investment.
They are one of the three Australian bush products that actual Australians who live in the bush would never substitute. (The other two being Driza-bone coats and Akubra hats.)
Of course I have never tested them shovelling snow...
I'm really loving my Clarks. I have the brown leather Shaler. Good for yard work, and nice enough to wear around as a casual boot too.
Keen Dallas Wellington. Quality that meets Red Wing, Chippewa, or Danner. The toe guard on the boots is a great feature as it protects the leather from any yardwork related mishaps. 90 day trial guarantee as well.