Stunning begonia. Is that named after you Laurie? (Kidding of course)
GHW should be a great place to buy from except they are very slow (4 months on my last two orders and I won't order from them again unless I am really hard up) and often the plant doesn't match the name in a lot of instances. The one begonia I really enjoyed from them was bought as crassicaulis but I knew when I received it that it wasn't. So I called it the sprawler or the monster for a few years. I just found out the real name from Charles Jaros last year - Bayberry Lane.
Some of their Hocking series have turned out to be pretty nice begonias too but it is best to get those from other growers than ordering from GHW.