St Pete Beach or Siesta Key?
 

Which has the better beach and where's the best accomodations in respect to a condo on the beach if price is no object?

I am assuming from your previous post that you are planning on an August trip. Assuming that is correct you should be able to find very nice accomodation on the beach. I am mostly familiar with Siesta Key and would most definitely recommend it. The beaches on Siesta are some of the best anywhere and Siesta Key has some very good restaurants. Check "www.siesta4rent.com" and you'll find dozens of condo's available for the time frame you are looking for.