Eitan’s Star was probably the most difficult puzzle I have ever solved. It sat on my shelf and intimidated me for a year until I got the nerve to clear my schedule, scramble and tackle it. Being a deep cut icosahedron with so many pieces means every move you make changes so many things. Forgetting how to reverse your conjugate after an algorithm can easily set you back an hour. Use a pen to take notes of conjugates. I highly recommend you lube it well. Stick your lube needle right into the holes where all the edge pieces meet. After I lubed it, I was enjoying solving it instead of fighting with it. Unlike the Icosaix, you can easily turn each face both clockwise and counter-clockwise. It turns better than the Icosaix (after lubed) but it’s a much longer solve. I didn’t have any trouble with stickers. They are good. You can borrow some algorithms from the Icosaix, but you will need to invent a couple more for the new piece types. This puzzle isn’t for the faint of heart. Mastering the Rubik’s cube and the Icosaix first will prove to be helpful.

A very expensive puzzle, but a very enthusiastic challenge solving it. The only thing is that you have to pay a lot of attention when you are solving the puzzle: it's easy to lost track of what you are doing!