I really like Tankguys.com. They are taking preorders and their service is excellent. They are very very good about answering e-mails. I highly recommend them. They have very competitive pricing too. They are taking orders for the retail boxed chips.
That said, they are a smaller retailer and so it might take a little longer for them to get stuff in stock, but they are definitely trying to satisfy their Conroe hungry customers. They had a much better price on the Asus P5W DH Deluxe board that I wanted but they didn't have it in stock. They will ship the Conroe’s on the 7th, at the earliest.