depends on what you were riding before (width of the last ski), your best bet would be to look at some thugs in person, they are a really big ski, and the 191's are about 15cms over my head, so they would be huge for you, again it depends where exactly your gonna use them, if you are going to grow into them, and just how hard you ski, but i think the 181's would be a better bet for you.
the thugs dont seem like a very popular ski (as in not many people have them), but they sound sick, and im soo exited to try mine, i think their gonna do everything i want them to do. i guess they are just too expensive, i got my 07/08's for around $420 without binders, which i thought was fine.