It's really a trick question, because what I'll never get any of the Curlin backers to admit is that there aren't very many good horses in the older handicap division for dirt horses. The current situation reminds me of a few years ago, when Mineshaft started winning everything...I thought he was a real nice horse, but no world-beater.
Now, Proud Spell vs. Big Brown -- that would be a horse race. Wouldn't be surprised to see her beat all the males -- Curlin too -- if she raced them.
I think Curlin is the best dirt horse in training right now. I also think the older handicap division is fairly weak compared to years previous (when Ghostzapper was around, or Invasor), so I admit he's not as good as he appears to be.
From the beginning I thought this year's 3yo filly crop was better than the colts.
P.S. I used Backseat Rhythm and Satan's Circus in my pick 4 (I had the entry on there if the 2,5 or 6 had won the opening race) and am now dealing with a jockey's objection. It looks like moderate interference at most, no worse than Coa coming out and exchanging bumps than the 6 in the first leg. If I get through this I've got some slim pickins: 5,7 / 5,7 in the last 2 legs.