Best US tracks for favourite backers

I used to bet on US racing ages ago and just dutched the first few in the betting. I always seemed to make a profit until it all went pear shaped lol

Anyway, can any US experts tell me which are the best tracks for favourites and which ones to avoid.

Can't remember which ones but there were definitely a few goldmine and graveyard tracks...would be handier to find out this way instead of the hard way again!

Thanks