No need to choose just one.... choose them all if you like them.
See one then leave the others on the back burner. There's no time limit..
i keep a shortlist of likely looking ladies who've bid on my auctions but who I didn't see at the time ... have seen a few on other occasions - i keep a note of the details of the auction and what they bid. Not all keep the bid open indefinitely but a lot do. A bit cheeky if you take more than a few months to get round to seeing them though, so sadly I generally feel obliged to write them off after a while.