If you have the 11K you will like the 15K. The 15K is a lot like the 12K but much easier to understand. It has the same hoops as the 12K and sadly no 4x4 or 5x7 hoop but come with the AcuQuilt hoop and SW. I had the 12K but have upgraded to the 15K and really like it. If you buy before the end of Dec. it should come with the iPad. I like ordinary sewing on it and the emb. is great. I have not had time to try the quilting yet but a friend has and said it works great. If you don't care about the AcuQuilt part and can get the 12K for a real deal that would save you $$. To add the AcuQuilt to the 12K it would cost you from $300 to $500 depending on your dealer. I got my 15K for the same price as the 12K and a great trade in. It is really a personal choice but find one of each to try out, then decide. Good luck in your choice.