Absolutely! I met Phil Williams at the Tall Bearded iris Society get-together in Salem, OR in May 2009 when we were up there, and at the time he was the VP of the TBIS. He's a great guy and would absolutely work with you if you had any problem with an order. Although I've only ordered from him once, the size and number of increases on his rhizomes were absolutely incredible and several of them bloomed for me last year; and I know Newyorkrita was totally impressed with her order from Rockytop that same year too. So I wouldn't hesitate to recommend Rockytop and Phil Williams.
When I posted the link for Rockytop I noticed that you can access his catalog through the website, which is nice...