Where the real estate is located is the primary thing that can make a difference in choosing a closing agent. Also, the type of services offered can vary (for example- escrow, resort notification, estoppels, title search, etc).
If this is a sale to a family member- you may decide that you just want help with the deed prep and recording. If this is a arms length transaction to a individual you don't know- then additional services may be very important.
I posted a list here that is organized by state:
http://www.timeshareforums.com/foru...p/98143-recommended-closing-agents-state.html
I'd also recommend you ask for a few quotes for your specific transaction before making a final decision. Pay attention to "extra" charges that may also be required such as a fee for requesting an estoppels, mailing charges, escrow fees, or even recording fees.. Some closing agents have started advertising a very low price to draw business- but then bill you for a bunch of add on fees throughout the closing process.
Finally, always check with your resort management company or owner services department to be sure you are aware of any developer or HOA required procedures such as right of first refusal, resort transfer fees, reconversion fees (can sometimes be charged for affiliated point systems), etc.. You resort may also offer a closing company recommendation.
Congrats on locating a buyer and good luck with your ownership transfer.