Paul
I have had my Legacy for a number of years now, and while it does not get the use I would like to see, it has held up well. The reason it does not get as much use as I would like is because I do a lot of custom work, and get paid to do what people pay me to do - i.e. I do not use it unless someone is paying me for something that can be done on it. However, and more to your point, a good friend of mine, who lives just down the road from me, has made more pieces on his Legacy than probably all the rest of the owners in the world combined. His name is Jim Neff, and he is featured from time to time in their magazine. He has done thousands upon thousands of pieces on his machine, and while parts do need replacing from time to time, overall his has held up pretty well.
On the down side, it can be a bit finicky to adjust, and it has a fairly steep learning curve. On the up side, it can do some pretty neat stuff besides make spirals, although it does them well. If you want to see some of my work (a very little bit of my work) on it, you can go to my personal page (URL below). When you get to the main page, there are two links on the Legacy.
Bill