.pro is nowhere near queen. It's maybe the guy who cleans some minor Lord's toilet. I would place .NET as the second most valuable/brandable TLD.
.net is good i also like .org or a regional domain i prefer .co.uk if im just targeting a uk audience or........
.com is a lonely king. no other gTLD comes close. a few ccTLDs are quite dominant in their respective markets (uk/de/jp/etc)
I've been seeing plenty of .org lately... .net's probably the queen, and .org's the mistress (.com's playing double)