I have owned and paddled several canoes and kayaks, and this is the best all-around boat I have ever seen! We even won the Blues Cruz Marathon race (in our class - K-2) on the Mississippi River in this boat.
I know of one other owner that ordered his boat from Australia, and I don't know of any dealers in the southeastern US, but if you want the best, fastest and most responsive sea kayak, get a Mirage.
I'm a pretty big guy, 6'4", 240 lbs., so I got the 580 (580cm, about 19'). My sweetheart got the 530. They are kevlar/glass so they are light, but somewhat fragile. Not the kind of boat to drag up on the beach or rocks.
The boat came without a rudder, so after paddling it once, I knew it needed a rudder badly. It comes ready to hang a rudder on the stern, so I ordered a rudder kit, installed it easily, and now it handles like a dream.
This boat is seemingly bullet-proof! The HTP plastic is very sturdy and stiff. The seat back is not the greatest, (that may be the next improvement project for me) but the boat tracks well and is relatively fast for a plastic production boat.
I would rate it a 9.5 out of 10.