Not for amex presale. For VIP I have to get in and out in under a minute.
There is no rhyme or reason to the availability of good seats -- either amex presale or at the beginning of general sale. It's a crap shoot. Remember that the people who get in before you have five or ten minutes to complete their sale. If they dump out before completing the transaction then those tix go back into the pool at about 15 minutes in. I also never select "best available". If I want floor seats I specify floor seats.
The best seats I've gotten on general sale were Row H Joe's side in Vegas. I bought them 20 mins after general sale started (but I was online for the entire 20 checking and rejecting seats).
I'm still a big fan of official platinum seats but I NEVER EVER buy them when they are first released. Better seats will become available at a better price. That's how I got 2nd row on the center aisle in Louisville in 2010 and 4th row Joes side in Chicago.
It takes patience and perseverance but it can be done!!!
Brooke, I'd keep checking TM right up to the day of the concert. If better seats pop up, you can sell your tickets for what you paid for them plus stub hub's 10% fee. You don't have to price gouge like scalpers do. Good Luck!