The PCGS "Coinfacts" should be distinguished from the PCGS price guide. It is referenced here: http://www.pcgscoinfacts.com/ The advantage of this subscriber-based system is access to many current auction records. Heritage Auctions offers the same thing free, but limited to Heritage Auctions with "unconfirmed" reports of other auction records. Has anyone found the relatively new "CoinFacts" useful or worth a trial?
I use NGC's Coin Explorer website. They have a ton of information for free, including upcoming auctions; and past auction prices realized. You do have to get a subscription if you want population reports though. I don't need those so have stayed with the free version. http://www.ngccoin.com/NGCCoinExplorer/
To answer your original question, I haven't tried PCGS's Coin Facts since it went to a subscription mode. Used to look at the old free Coin Facts back in the day.
Thanks for the information on the NGC site. I haven't joined the NGC chat forum in the past as it looks less active than PCGS'. It looks like there is a great deal of competition now to provide information to collectors.